20071440

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{457}}^1$

素因数の和:537

約数の個数: 120

約数和(自身を含む): 68661528

約数和(自身を除く): 48590088

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 61, 72, 80, 90, 120, 122, 144, 180, 183, 240, 244, 305, 360, 366, 457, 488, 549, 610, 720, 732, 914, 915, 976, 1098, 1220, 1371, 1464, 1828, 1830, 2196, 2285, 2440, 2742, 2745, 2928, 3656, 3660, 4113, 4392, 4570, 4880, 5484, 5490, 6855, 7312, 7320, 8226, 8784, 9140, 10968, 10980, 13710, 14640, 16452, 18280, 20565, 21936, 21960, 27420, 27877, 32904, 36560, 41130, 43920, 54840, 55754, 65808, 82260, 83631, 109680, 111508, 139385, 164520, 167262, 223016, 250893, 278770, 329040, 334524, 418155, 446032, 501786, 557540, 669048, 836310, 1003572, 1115080, 1254465, 1338096, 1672620, 2007144, 2230160, 2508930, 3345240, 4014288, 5017860, 6690480, 10035720, 20071440]

約数ペア:

[(1, 20071440), (2, 10035720), (3, 6690480), (4, 5017860), (5, 4014288), (6, 3345240), (8, 2508930), (9, 2230160), (10, 2007144), (12, 1672620), (15, 1338096), (16, 1254465), (18, 1115080), (20, 1003572), (24, 836310), (30, 669048), (36, 557540), (40, 501786), (45, 446032), (48, 418155), (60, 334524), (61, 329040), (72, 278770), (80, 250893), (90, 223016), (120, 167262), (122, 164520), (144, 139385), (180, 111508), (183, 109680), (240, 83631), (244, 82260), (305, 65808), (360, 55754), (366, 54840), (457, 43920), (488, 41130), (549, 36560), (610, 32904), (720, 27877), (732, 27420), (914, 21960), (915, 21936), (976, 20565), (1098, 18280), (1220, 16452), (1371, 14640), (1464, 13710), (1828, 10980), (1830, 10968), (2196, 9140), (2285, 8784), (2440, 8226), (2742, 7320), (2745, 7312), (2928, 6855), (3656, 5490), (3660, 5484), (4113, 4880), (4392, 4570)]