21468895

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:511

約数の個数: 32

約数和(自身を含む): 31113216

約数和(自身を除く): 9644321

約数列:

[1, 5, 7, 31, 35, 47, 155, 217, 235, 329, 421, 1085, 1457, 1645, 2105, 2947, 7285, 10199, 13051, 14735, 19787, 50995, 65255, 91357, 98935, 138509, 456785, 613397, 692545, 3066985, 4293779, 21468895]

約数ペア:

[(1, 21468895), (5, 4293779), (7, 3066985), (31, 692545), (35, 613397), (47, 456785), (155, 138509), (217, 98935), (235, 91357), (329, 65255), (421, 50995), (1085, 19787), (1457, 14735), (1645, 13051), (2105, 10199), (2947, 7285)]