21399288

素因数分解:

$2^3\times 3^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{311}}^1$

素因数の和:428

約数の個数: 64

約数和(自身を含む): 55710720

約数和(自身を除く): 34311432

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 47, 61, 94, 122, 141, 183, 188, 244, 282, 311, 366, 376, 488, 564, 622, 732, 933, 1128, 1244, 1464, 1866, 2488, 2867, 3732, 5734, 7464, 8601, 11468, 14617, 17202, 18971, 22936, 29234, 34404, 37942, 43851, 56913, 58468, 68808, 75884, 87702, 113826, 116936, 151768, 175404, 227652, 350808, 455304, 891637, 1783274, 2674911, 3566548, 5349822, 7133096, 10699644, 21399288]

約数ペア:

[(1, 21399288), (2, 10699644), (3, 7133096), (4, 5349822), (6, 3566548), (8, 2674911), (12, 1783274), (24, 891637), (47, 455304), (61, 350808), (94, 227652), (122, 175404), (141, 151768), (183, 116936), (188, 113826), (244, 87702), (282, 75884), (311, 68808), (366, 58468), (376, 56913), (488, 43851), (564, 37942), (622, 34404), (732, 29234), (933, 22936), (1128, 18971), (1244, 17202), (1464, 14617), (1866, 11468), (2488, 8601), (2867, 7464), (3732, 5734)]