21317814

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{1901}}^1$

素因数の和:2005

約数の個数: 48

約数和(自身を含む): 53408160

約数和(自身を除く): 32090346

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 89, 126, 178, 267, 534, 623, 801, 1246, 1602, 1869, 1901, 3738, 3802, 5607, 5703, 11214, 11406, 13307, 17109, 26614, 34218, 39921, 79842, 119763, 169189, 239526, 338378, 507567, 1015134, 1184323, 1522701, 2368646, 3045402, 3552969, 7105938, 10658907, 21317814]

約数ペア:

[(1, 21317814), (2, 10658907), (3, 7105938), (6, 3552969), (7, 3045402), (9, 2368646), (14, 1522701), (18, 1184323), (21, 1015134), (42, 507567), (63, 338378), (89, 239526), (126, 169189), (178, 119763), (267, 79842), (534, 39921), (623, 34218), (801, 26614), (1246, 17109), (1602, 13307), (1869, 11406), (1901, 11214), (3738, 5703), (3802, 5607)]