21957825

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^2\times {\mathrm{811}}^1$

素因数の和:862

約数の個数: 36

約数和(自身を含む): 38362128

約数和(自身を除く): 16404303

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 361, 475, 811, 1083, 1425, 1805, 2433, 4055, 5415, 9025, 12165, 15409, 20275, 27075, 46227, 60825, 77045, 231135, 292771, 385225, 878313, 1155675, 1463855, 4391565, 7319275, 21957825]

約数ペア:

[(1, 21957825), (3, 7319275), (5, 4391565), (15, 1463855), (19, 1155675), (25, 878313), (57, 385225), (75, 292771), (95, 231135), (285, 77045), (361, 60825), (475, 46227), (811, 27075), (1083, 20275), (1425, 15409), (1805, 12165), (2433, 9025), (4055, 5415)]