21726025

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{863}}^1$

素因数の和:945

約数の個数: 24

約数和(自身を含む): 28926720

約数和(自身を除く): 7200695

約数列:

[1, 5, 19, 25, 53, 95, 265, 475, 863, 1007, 1325, 4315, 5035, 16397, 21575, 25175, 45739, 81985, 228695, 409925, 869041, 1143475, 4345205, 21726025]

約数ペア:

[(1, 21726025), (5, 4345205), (19, 1143475), (25, 869041), (53, 409925), (95, 228695), (265, 81985), (475, 45739), (863, 25175), (1007, 21575), (1325, 16397), (4315, 5035)]