20782485

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{223}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 38438400

約数和(自身を除く): 17655915

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 109, 171, 223, 285, 327, 545, 669, 855, 981, 1115, 1635, 2007, 2071, 3345, 4237, 4905, 6213, 10035, 10355, 12711, 18639, 21185, 24307, 31065, 38133, 63555, 72921, 93195, 121535, 190665, 218763, 364605, 461833, 1093815, 1385499, 2309165, 4156497, 6927495, 20782485]

約数ペア:

[(1, 20782485), (3, 6927495), (5, 4156497), (9, 2309165), (15, 1385499), (19, 1093815), (45, 461833), (57, 364605), (95, 218763), (109, 190665), (171, 121535), (223, 93195), (285, 72921), (327, 63555), (545, 38133), (669, 31065), (855, 24307), (981, 21185), (1115, 18639), (1635, 12711), (2007, 10355), (2071, 10035), (3345, 6213), (4237, 4905)]