31009960

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:322

約数の個数: 64

約数和(自身を含む): 72316800

約数和(自身を除く): 41306840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 71, 122, 142, 179, 244, 284, 305, 355, 358, 488, 568, 610, 710, 716, 895, 1220, 1420, 1432, 1790, 2440, 2840, 3580, 4331, 7160, 8662, 10919, 12709, 17324, 21655, 21838, 25418, 34648, 43310, 43676, 50836, 54595, 63545, 86620, 87352, 101672, 109190, 127090, 173240, 218380, 254180, 436760, 508360, 775249, 1550498, 3100996, 3876245, 6201992, 7752490, 15504980, 31009960]

約数ペア:

[(1, 31009960), (2, 15504980), (4, 7752490), (5, 6201992), (8, 3876245), (10, 3100996), (20, 1550498), (40, 775249), (61, 508360), (71, 436760), (122, 254180), (142, 218380), (179, 173240), (244, 127090), (284, 109190), (305, 101672), (355, 87352), (358, 86620), (488, 63545), (568, 54595), (610, 50836), (710, 43676), (716, 43310), (895, 34648), (1220, 25418), (1420, 21838), (1432, 21655), (1790, 17324), (2440, 12709), (2840, 10919), (3580, 8662), (4331, 7160)]