21821895

素因数分解:

$3^2\times 5^1\times {\mathrm{239}}^1\times {\mathrm{2029}}^1$

素因数の和:2279

約数の個数: 24

約数和(自身を含む): 38001600

約数和(自身を除く): 16179705

約数列:

[1, 3, 5, 9, 15, 45, 239, 717, 1195, 2029, 2151, 3585, 6087, 10145, 10755, 18261, 30435, 91305, 484931, 1454793, 2424655, 4364379, 7273965, 21821895]

約数ペア:

[(1, 21821895), (3, 7273965), (5, 4364379), (9, 2424655), (15, 1454793), (45, 484931), (239, 91305), (717, 30435), (1195, 18261), (2029, 10755), (2151, 10145), (3585, 6087)]