21829775

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{487}}^1$

素因数の和:671

約数の個数: 24

約数和(自身を含む): 29771904

約数和(自身を除く): 7942129

約数列:

[1, 5, 11, 25, 55, 163, 275, 487, 815, 1793, 2435, 4075, 5357, 8965, 12175, 26785, 44825, 79381, 133925, 396905, 873191, 1984525, 4365955, 21829775]

約数ペア:

[(1, 21829775), (5, 4365955), (11, 1984525), (25, 873191), (55, 396905), (163, 133925), (275, 79381), (487, 44825), (815, 26785), (1793, 12175), (2435, 8965), (4075, 5357)]