21876725

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{811}}^1$

素因数の和:917

約数の個数: 24

約数和(自身を含む): 29602272

約数和(自身を除く): 7725547

約数列:

[1, 5, 13, 25, 65, 83, 325, 415, 811, 1079, 2075, 4055, 5395, 10543, 20275, 26975, 52715, 67313, 263575, 336565, 875069, 1682825, 4375345, 21876725]

約数ペア:

[(1, 21876725), (5, 4375345), (13, 1682825), (25, 875069), (65, 336565), (83, 263575), (325, 67313), (415, 52715), (811, 26975), (1079, 20275), (2075, 10543), (4055, 5395)]