28968040

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^2\times {\mathrm{37}}^2$

素因数の和:131

約数の個数: 72

約数和(自身を含む): 70026390

約数和(自身を除く): 41058350

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 37, 40, 46, 74, 92, 115, 148, 184, 185, 230, 296, 370, 460, 529, 740, 851, 920, 1058, 1369, 1480, 1702, 2116, 2645, 2738, 3404, 4232, 4255, 5290, 5476, 6808, 6845, 8510, 10580, 10952, 13690, 17020, 19573, 21160, 27380, 31487, 34040, 39146, 54760, 62974, 78292, 97865, 125948, 156584, 157435, 195730, 251896, 314870, 391460, 629740, 724201, 782920, 1259480, 1448402, 2896804, 3621005, 5793608, 7242010, 14484020, 28968040]

約数ペア:

[(1, 28968040), (2, 14484020), (4, 7242010), (5, 5793608), (8, 3621005), (10, 2896804), (20, 1448402), (23, 1259480), (37, 782920), (40, 724201), (46, 629740), (74, 391460), (92, 314870), (115, 251896), (148, 195730), (184, 157435), (185, 156584), (230, 125948), (296, 97865), (370, 78292), (460, 62974), (529, 54760), (740, 39146), (851, 34040), (920, 31487), (1058, 27380), (1369, 21160), (1480, 19573), (1702, 17020), (2116, 13690), (2645, 10952), (2738, 10580), (3404, 8510), (4232, 6845), (4255, 6808), (5290, 5476)]