21682325

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{6521}}^1$

素因数の和:6557

約数の個数: 24

約数和(自身を含む): 32349120

約数和(自身を除く): 10666795

約数列:

[1, 5, 7, 19, 25, 35, 95, 133, 175, 475, 665, 3325, 6521, 32605, 45647, 123899, 163025, 228235, 619495, 867293, 1141175, 3097475, 4336465, 21682325]

約数ペア:

[(1, 21682325), (5, 4336465), (7, 3097475), (19, 1141175), (25, 867293), (35, 619495), (95, 228235), (133, 163025), (175, 123899), (475, 45647), (665, 32605), (3325, 6521)]