20681272

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{359}}^1\times {\mathrm{379}}^1$

素因数の和:763

約数の個数: 32

約数和(自身を含む): 41040000

約数和(自身を除く): 20358728

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 359, 379, 718, 758, 1436, 1516, 2872, 3032, 6821, 7201, 13642, 14402, 27284, 28804, 54568, 57608, 136061, 272122, 544244, 1088488, 2585159, 5170318, 10340636, 20681272]

約数ペア:

[(1, 20681272), (2, 10340636), (4, 5170318), (8, 2585159), (19, 1088488), (38, 544244), (76, 272122), (152, 136061), (359, 57608), (379, 54568), (718, 28804), (758, 27284), (1436, 14402), (1516, 13642), (2872, 7201), (3032, 6821)]