20978604

素因数分解:

$2^2\times 3^2\times {\mathrm{149}}^1\times {\mathrm{3911}}^1$

素因数の和:4070

約数の個数: 36

約数和(自身を含む): 53398800

約数和(自身を除く): 32420196

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 149, 298, 447, 596, 894, 1341, 1788, 2682, 3911, 5364, 7822, 11733, 15644, 23466, 35199, 46932, 70398, 140796, 582739, 1165478, 1748217, 2330956, 3496434, 5244651, 6992868, 10489302, 20978604]

約数ペア:

[(1, 20978604), (2, 10489302), (3, 6992868), (4, 5244651), (6, 3496434), (9, 2330956), (12, 1748217), (18, 1165478), (36, 582739), (149, 140796), (298, 70398), (447, 46932), (596, 35199), (894, 23466), (1341, 15644), (1788, 11733), (2682, 7822), (3911, 5364)]