65545780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1489}}^1$

素因数の和:1600

約数の個数: 48

約数和(自身を含む): 144184320

約数和(自身を除く): 78638540

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 620, 710, 1420, 1489, 2201, 2978, 4402, 5956, 7445, 8804, 11005, 14890, 22010, 29780, 44020, 46159, 92318, 105719, 184636, 211438, 230795, 422876, 461590, 528595, 923180, 1057190, 2114380, 3277289, 6554578, 13109156, 16386445, 32772890, 65545780]

約数ペア:

[(1, 65545780), (2, 32772890), (4, 16386445), (5, 13109156), (10, 6554578), (20, 3277289), (31, 2114380), (62, 1057190), (71, 923180), (124, 528595), (142, 461590), (155, 422876), (284, 230795), (310, 211438), (355, 184636), (620, 105719), (710, 92318), (1420, 46159), (1489, 44020), (2201, 29780), (2978, 22010), (4402, 14890), (5956, 11005), (7445, 8804)]