21903675

素因数分解:

$3^1\times 5^2\times {\mathrm{19}}^2\times {\mathrm{809}}^1$

素因数の和:860

約数の個数: 36

約数和(自身を含む): 38267640

約数和(自身を除く): 16363965

約数列:

[1, 3, 5, 15, 19, 25, 57, 75, 95, 285, 361, 475, 809, 1083, 1425, 1805, 2427, 4045, 5415, 9025, 12135, 15371, 20225, 27075, 46113, 60675, 76855, 230565, 292049, 384275, 876147, 1152825, 1460245, 4380735, 7301225, 21903675]

約数ペア:

[(1, 21903675), (3, 7301225), (5, 4380735), (15, 1460245), (19, 1152825), (25, 876147), (57, 384275), (75, 292049), (95, 230565), (285, 76855), (361, 60675), (475, 46113), (809, 27075), (1083, 20225), (1425, 15371), (1805, 12135), (2427, 9025), (4045, 5415)]