21524890

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{2389}}^1$

素因数の和:2466

約数の個数: 32

約数和(自身を含む): 41815440

約数和(自身を除く): 20290550

約数列:

[1, 2, 5, 10, 17, 34, 53, 85, 106, 170, 265, 530, 901, 1802, 2389, 4505, 4778, 9010, 11945, 23890, 40613, 81226, 126617, 203065, 253234, 406130, 633085, 1266170, 2152489, 4304978, 10762445, 21524890]

約数ペア:

[(1, 21524890), (2, 10762445), (5, 4304978), (10, 2152489), (17, 1266170), (34, 633085), (53, 406130), (85, 253234), (106, 203065), (170, 126617), (265, 81226), (530, 40613), (901, 23890), (1802, 11945), (2389, 9010), (4505, 4778)]