21130995

素因数分解:

$3^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{1567}}^1$

素因数の和:1635

約数の個数: 32

約数和(自身を含む): 36126720

約数和(自身を除く): 14995725

約数列:

[1, 3, 5, 15, 29, 31, 87, 93, 145, 155, 435, 465, 899, 1567, 2697, 4495, 4701, 7835, 13485, 23505, 45443, 48577, 136329, 145731, 227215, 242885, 681645, 728655, 1408733, 4226199, 7043665, 21130995]

約数ペア:

[(1, 21130995), (3, 7043665), (5, 4226199), (15, 1408733), (29, 728655), (31, 681645), (87, 242885), (93, 227215), (145, 145731), (155, 136329), (435, 48577), (465, 45443), (899, 23505), (1567, 13485), (2697, 7835), (4495, 4701)]