20405520

素因数分解:

$2^4\times 3^4\times 5^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1$

素因数の和:139

約数の個数: 200

約数和(自身を含む): 73459584

約数和(自身を除く): 53054064

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, 67, 72, 80, 81, 90, 94, 108, 120, 134, 135, 141, 144, 162, 180, 188, 201, 216, 235, 240, 268, 270, 282, 324, 335, 360, 376, 402, 405, 423, 432, 470, 536, 540, 564, 603, 648, 670, 705, 720, 752, 804, 810, 846, 940, 1005, 1072, 1080, 1128, 1206, 1269, 1296, 1340, 1410, 1608, 1620, 1692, 1809, 1880, 2010, 2115, 2160, 2256, 2412, 2538, 2680, 2820, 3015, 3149, 3216, 3240, 3384, 3618, 3760, 3807, 4020, 4230, 4824, 5076, 5360, 5427, 5640, 6030, 6298, 6345, 6480, 6768, 7236, 7614, 8040, 8460, 9045, 9447, 9648, 10152, 10854, 11280, 12060, 12596, 12690, 14472, 15228, 15745, 16080, 16920, 18090, 18894, 19035, 20304, 21708, 24120, 25192, 25380, 27135, 28341, 28944, 30456, 31490, 33840, 36180, 37788, 38070, 43416, 47235, 48240, 50384, 50760, 54270, 56682, 60912, 62980, 72360, 75576, 76140, 85023, 86832, 94470, 101520, 108540, 113364, 125960, 141705, 144720, 151152, 152280, 170046, 188940, 217080, 226728, 251920, 255069, 283410, 304560, 340092, 377880, 425115, 434160, 453456, 510138, 566820, 680184, 755760, 850230, 1020276, 1133640, 1275345, 1360368, 1700460, 2040552, 2267280, 2550690, 3400920, 4081104, 5101380, 6801840, 10202760, 20405520]

約数ペア:

[(1, 20405520), (2, 10202760), (3, 6801840), (4, 5101380), (5, 4081104), (6, 3400920), (8, 2550690), (9, 2267280), (10, 2040552), (12, 1700460), (15, 1360368), (16, 1275345), (18, 1133640), (20, 1020276), (24, 850230), (27, 755760), (30, 680184), (36, 566820), (40, 510138), (45, 453456), (47, 434160), (48, 425115), (54, 377880), (60, 340092), (67, 304560), (72, 283410), (80, 255069), (81, 251920), (90, 226728), (94, 217080), (108, 188940), (120, 170046), (134, 152280), (135, 151152), (141, 144720), (144, 141705), (162, 125960), (180, 113364), (188, 108540), (201, 101520), (216, 94470), (235, 86832), (240, 85023), (268, 76140), (270, 75576), (282, 72360), (324, 62980), (335, 60912), (360, 56682), (376, 54270), (402, 50760), (405, 50384), (423, 48240), (432, 47235), (470, 43416), (536, 38070), (540, 37788), (564, 36180), (603, 33840), (648, 31490), (670, 30456), (705, 28944), (720, 28341), (752, 27135), (804, 25380), (810, 25192), (846, 24120), (940, 21708), (1005, 20304), (1072, 19035), (1080, 18894), (1128, 18090), (1206, 16920), (1269, 16080), (1296, 15745), (1340, 15228), (1410, 14472), (1608, 12690), (1620, 12596), (1692, 12060), (1809, 11280), (1880, 10854), (2010, 10152), (2115, 9648), (2160, 9447), (2256, 9045), (2412, 8460), (2538, 8040), (2680, 7614), (2820, 7236), (3015, 6768), (3149, 6480), (3216, 6345), (3240, 6298), (3384, 6030), (3618, 5640), (3760, 5427), (3807, 5360), (4020, 5076), (4230, 4824)]