20967120

素因数分解:

$2^4\times 3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{571}}^1$

素因数の和:610

約数の個数: 160

約数和(自身を含む): 76602240

約数和(自身を除く): 55635120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 27, 30, 34, 36, 40, 45, 48, 51, 54, 60, 68, 72, 80, 85, 90, 102, 108, 120, 135, 136, 144, 153, 170, 180, 204, 216, 240, 255, 270, 272, 306, 340, 360, 408, 432, 459, 510, 540, 571, 612, 680, 720, 765, 816, 918, 1020, 1080, 1142, 1224, 1360, 1530, 1713, 1836, 2040, 2160, 2284, 2295, 2448, 2855, 3060, 3426, 3672, 4080, 4568, 4590, 5139, 5710, 6120, 6852, 7344, 8565, 9136, 9180, 9707, 10278, 11420, 12240, 13704, 15417, 17130, 18360, 19414, 20556, 22840, 25695, 27408, 29121, 30834, 34260, 36720, 38828, 41112, 45680, 48535, 51390, 58242, 61668, 68520, 77085, 77656, 82224, 87363, 97070, 102780, 116484, 123336, 137040, 145605, 154170, 155312, 174726, 194140, 205560, 232968, 246672, 262089, 291210, 308340, 349452, 388280, 411120, 436815, 465936, 524178, 582420, 616680, 698904, 776560, 873630, 1048356, 1164840, 1233360, 1310445, 1397808, 1747260, 2096712, 2329680, 2620890, 3494520, 4193424, 5241780, 6989040, 10483560, 20967120]

約数ペア:

[(1, 20967120), (2, 10483560), (3, 6989040), (4, 5241780), (5, 4193424), (6, 3494520), (8, 2620890), (9, 2329680), (10, 2096712), (12, 1747260), (15, 1397808), (16, 1310445), (17, 1233360), (18, 1164840), (20, 1048356), (24, 873630), (27, 776560), (30, 698904), (34, 616680), (36, 582420), (40, 524178), (45, 465936), (48, 436815), (51, 411120), (54, 388280), (60, 349452), (68, 308340), (72, 291210), (80, 262089), (85, 246672), (90, 232968), (102, 205560), (108, 194140), (120, 174726), (135, 155312), (136, 154170), (144, 145605), (153, 137040), (170, 123336), (180, 116484), (204, 102780), (216, 97070), (240, 87363), (255, 82224), (270, 77656), (272, 77085), (306, 68520), (340, 61668), (360, 58242), (408, 51390), (432, 48535), (459, 45680), (510, 41112), (540, 38828), (571, 36720), (612, 34260), (680, 30834), (720, 29121), (765, 27408), (816, 25695), (918, 22840), (1020, 20556), (1080, 19414), (1142, 18360), (1224, 17130), (1360, 15417), (1530, 13704), (1713, 12240), (1836, 11420), (2040, 10278), (2160, 9707), (2284, 9180), (2295, 9136), (2448, 8565), (2855, 7344), (3060, 6852), (3426, 6120), (3672, 5710), (4080, 5139), (4568, 4590)]