21147828

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{4373}}^1$

素因数の和:4424

約数の個数: 48

約数和(自身を含む): 54867456

約数和(自身を除く): 33719628

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 31, 39, 52, 62, 78, 93, 124, 156, 186, 372, 403, 806, 1209, 1612, 2418, 4373, 4836, 8746, 13119, 17492, 26238, 52476, 56849, 113698, 135563, 170547, 227396, 271126, 341094, 406689, 542252, 682188, 813378, 1626756, 1762319, 3524638, 5286957, 7049276, 10573914, 21147828]

約数ペア:

[(1, 21147828), (2, 10573914), (3, 7049276), (4, 5286957), (6, 3524638), (12, 1762319), (13, 1626756), (26, 813378), (31, 682188), (39, 542252), (52, 406689), (62, 341094), (78, 271126), (93, 227396), (124, 170547), (156, 135563), (186, 113698), (372, 56849), (403, 52476), (806, 26238), (1209, 17492), (1612, 13119), (2418, 8746), (4373, 4836)]