81317520

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:164

約数の個数: 240

約数和(自身を含む): 292481280

約数和(自身を除く): 211163760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 47, 48, 54, 60, 72, 80, 81, 89, 90, 94, 108, 120, 135, 141, 144, 162, 178, 180, 188, 216, 235, 240, 243, 267, 270, 282, 324, 356, 360, 376, 405, 423, 432, 445, 470, 486, 534, 540, 564, 648, 705, 712, 720, 752, 801, 810, 846, 890, 940, 972, 1068, 1080, 1128, 1215, 1269, 1296, 1335, 1410, 1424, 1602, 1620, 1692, 1780, 1880, 1944, 2115, 2136, 2160, 2256, 2403, 2430, 2538, 2670, 2820, 3204, 3240, 3384, 3560, 3760, 3807, 3888, 4005, 4183, 4230, 4272, 4806, 4860, 5076, 5340, 5640, 6345, 6408, 6480, 6768, 7120, 7209, 7614, 8010, 8366, 8460, 9612, 9720, 10152, 10680, 11280, 11421, 12015, 12549, 12690, 12816, 14418, 15228, 16020, 16732, 16920, 19035, 19224, 19440, 20304, 20915, 21360, 21627, 22842, 24030, 25098, 25380, 28836, 30456, 32040, 33464, 33840, 36045, 37647, 38070, 38448, 41830, 43254, 45684, 48060, 50196, 50760, 57105, 57672, 60912, 62745, 64080, 66928, 72090, 75294, 76140, 83660, 86508, 91368, 96120, 100392, 101520, 108135, 112941, 114210, 115344, 125490, 144180, 150588, 152280, 167320, 173016, 182736, 188235, 192240, 200784, 216270, 225882, 228420, 250980, 288360, 301176, 304560, 334640, 338823, 346032, 376470, 432540, 451764, 456840, 501960, 564705, 576720, 602352, 677646, 752940, 865080, 903528, 913680, 1003920, 1016469, 1129410, 1355292, 1505880, 1694115, 1730160, 1807056, 2032938, 2258820, 2710584, 3011760, 3388230, 4065876, 4517640, 5082345, 5421168, 6776460, 8131752, 9035280, 10164690, 13552920, 16263504, 20329380, 27105840, 40658760, 81317520]

約数ペア:

[(1, 81317520), (2, 40658760), (3, 27105840), (4, 20329380), (5, 16263504), (6, 13552920), (8, 10164690), (9, 9035280), (10, 8131752), (12, 6776460), (15, 5421168), (16, 5082345), (18, 4517640), (20, 4065876), (24, 3388230), (27, 3011760), (30, 2710584), (36, 2258820), (40, 2032938), (45, 1807056), (47, 1730160), (48, 1694115), (54, 1505880), (60, 1355292), (72, 1129410), (80, 1016469), (81, 1003920), (89, 913680), (90, 903528), (94, 865080), (108, 752940), (120, 677646), (135, 602352), (141, 576720), (144, 564705), (162, 501960), (178, 456840), (180, 451764), (188, 432540), (216, 376470), (235, 346032), (240, 338823), (243, 334640), (267, 304560), (270, 301176), (282, 288360), (324, 250980), (356, 228420), (360, 225882), (376, 216270), (405, 200784), (423, 192240), (432, 188235), (445, 182736), (470, 173016), (486, 167320), (534, 152280), (540, 150588), (564, 144180), (648, 125490), (705, 115344), (712, 114210), (720, 112941), (752, 108135), (801, 101520), (810, 100392), (846, 96120), (890, 91368), (940, 86508), (972, 83660), (1068, 76140), (1080, 75294), (1128, 72090), (1215, 66928), (1269, 64080), (1296, 62745), (1335, 60912), (1410, 57672), (1424, 57105), (1602, 50760), (1620, 50196), (1692, 48060), (1780, 45684), (1880, 43254), (1944, 41830), (2115, 38448), (2136, 38070), (2160, 37647), (2256, 36045), (2403, 33840), (2430, 33464), (2538, 32040), (2670, 30456), (2820, 28836), (3204, 25380), (3240, 25098), (3384, 24030), (3560, 22842), (3760, 21627), (3807, 21360), (3888, 20915), (4005, 20304), (4183, 19440), (4230, 19224), (4272, 19035), (4806, 16920), (4860, 16732), (5076, 16020), (5340, 15228), (5640, 14418), (6345, 12816), (6408, 12690), (6480, 12549), (6768, 12015), (7120, 11421), (7209, 11280), (7614, 10680), (8010, 10152), (8366, 9720), (8460, 9612)]