21519421

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{419}}^1$

素因数の和:489

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 7510979

約数列:

[1, 7, 11, 23, 29, 77, 161, 203, 253, 319, 419, 667, 1771, 2233, 2933, 4609, 4669, 7337, 9637, 12151, 32263, 51359, 67459, 85057, 106007, 133661, 279473, 742049, 935627, 1956311, 3074203, 21519421]

約数ペア:

[(1, 21519421), (7, 3074203), (11, 1956311), (23, 935627), (29, 742049), (77, 279473), (161, 133661), (203, 106007), (253, 85057), (319, 67459), (419, 51359), (667, 32263), (1771, 12151), (2233, 9637), (2933, 7337), (4609, 4669)]