28609880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1487}}^1$

素因数の和:1548

約数の個数: 64

約数和(自身を含む): 71245440

約数和(自身を除く): 42635560

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 37, 40, 52, 65, 74, 104, 130, 148, 185, 260, 296, 370, 481, 520, 740, 962, 1480, 1487, 1924, 2405, 2974, 3848, 4810, 5948, 7435, 9620, 11896, 14870, 19240, 19331, 29740, 38662, 55019, 59480, 77324, 96655, 110038, 154648, 193310, 220076, 275095, 386620, 440152, 550190, 715247, 773240, 1100380, 1430494, 2200760, 2860988, 3576235, 5721976, 7152470, 14304940, 28609880]

約数ペア:

[(1, 28609880), (2, 14304940), (4, 7152470), (5, 5721976), (8, 3576235), (10, 2860988), (13, 2200760), (20, 1430494), (26, 1100380), (37, 773240), (40, 715247), (52, 550190), (65, 440152), (74, 386620), (104, 275095), (130, 220076), (148, 193310), (185, 154648), (260, 110038), (296, 96655), (370, 77324), (481, 59480), (520, 55019), (740, 38662), (962, 29740), (1480, 19331), (1487, 19240), (1924, 14870), (2405, 11896), (2974, 9620), (3848, 7435), (4810, 5948)]