21768705

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{2383}}^1$

素因数の和:2430

約数の個数: 48

約数和(自身を含む): 44628480

約数和(自身を除く): 22859775

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 63, 87, 105, 145, 203, 261, 315, 435, 609, 1015, 1305, 1827, 2383, 3045, 7149, 9135, 11915, 16681, 21447, 35745, 50043, 69107, 83405, 107235, 150129, 207321, 250215, 345535, 483749, 621963, 750645, 1036605, 1451247, 2418745, 3109815, 4353741, 7256235, 21768705]

約数ペア:

[(1, 21768705), (3, 7256235), (5, 4353741), (7, 3109815), (9, 2418745), (15, 1451247), (21, 1036605), (29, 750645), (35, 621963), (45, 483749), (63, 345535), (87, 250215), (105, 207321), (145, 150129), (203, 107235), (261, 83405), (315, 69107), (435, 50043), (609, 35745), (1015, 21447), (1305, 16681), (1827, 11915), (2383, 9135), (3045, 7149)]