20541015

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2441}}^1$

素因数の和:2480

約数の個数: 48

約数和(自身を含む): 41142816

約数和(自身を除く): 20601801

約数列:

[1, 3, 5, 9, 11, 15, 17, 33, 45, 51, 55, 85, 99, 153, 165, 187, 255, 495, 561, 765, 935, 1683, 2441, 2805, 7323, 8415, 12205, 21969, 26851, 36615, 41497, 80553, 109845, 124491, 134255, 207485, 241659, 373473, 402765, 456467, 622455, 1208295, 1369401, 1867365, 2282335, 4108203, 6847005, 20541015]

約数ペア:

[(1, 20541015), (3, 6847005), (5, 4108203), (9, 2282335), (11, 1867365), (15, 1369401), (17, 1208295), (33, 622455), (45, 456467), (51, 402765), (55, 373473), (85, 241659), (99, 207485), (153, 134255), (165, 124491), (187, 109845), (255, 80553), (495, 41497), (561, 36615), (765, 26851), (935, 21969), (1683, 12205), (2441, 8415), (2805, 7323)]