21347872

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{7331}}^1$

素因数の和:7361

約数の個数: 48

約数和(自身を含む): 51734592

約数和(自身を除く): 30386720

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 91, 104, 112, 182, 208, 224, 364, 416, 728, 1456, 2912, 7331, 14662, 29324, 51317, 58648, 95303, 102634, 117296, 190606, 205268, 234592, 381212, 410536, 667121, 762424, 821072, 1334242, 1524848, 1642144, 2668484, 3049696, 5336968, 10673936, 21347872]

約数ペア:

[(1, 21347872), (2, 10673936), (4, 5336968), (7, 3049696), (8, 2668484), (13, 1642144), (14, 1524848), (16, 1334242), (26, 821072), (28, 762424), (32, 667121), (52, 410536), (56, 381212), (91, 234592), (104, 205268), (112, 190606), (182, 117296), (208, 102634), (224, 95303), (364, 58648), (416, 51317), (728, 29324), (1456, 14662), (2912, 7331)]