28840760

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{1499}}^1$

素因数の和:1560

約数の個数: 64

約数和(自身を含む): 71820000

約数和(自身を除く): 42979240

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, 1499, 1924, 2405, 2998, 3848, 4810, 5996, 7495, 9620, 11992, 14990, 19240, 19487, 29980, 38974, 55463, 59960, 77948, 97435, 110926, 155896, 194870, 221852, 277315, 389740, 443704, 554630, 721019, 779480, 1109260, 1442038, 2218520, 2884076, 3605095, 5768152, 7210190, 14420380, 28840760]

約数ペア:

[(1, 28840760), (2, 14420380), (4, 7210190), (5, 5768152), (8, 3605095), (10, 2884076), (13, 2218520), (20, 1442038), (26, 1109260), (37, 779480), (40, 721019), (52, 554630), (65, 443704), (74, 389740), (104, 277315), (130, 221852), (148, 194870), (185, 155896), (260, 110926), (296, 97435), (370, 77948), (481, 59960), (520, 55463), (740, 38974), (962, 29980), (1480, 19487), (1499, 19240), (1924, 14990), (2405, 11992), (2998, 9620), (3848, 7495), (4810, 5996)]