12721960

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:226

約数の個数: 64

約数和(自身を含む): 29963520

約数和(自身を除く): 17241560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 67, 94, 101, 134, 188, 202, 235, 268, 335, 376, 404, 470, 505, 536, 670, 808, 940, 1010, 1340, 1880, 2020, 2680, 3149, 4040, 4747, 6298, 6767, 9494, 12596, 13534, 15745, 18988, 23735, 25192, 27068, 31490, 33835, 37976, 47470, 54136, 62980, 67670, 94940, 125960, 135340, 189880, 270680, 318049, 636098, 1272196, 1590245, 2544392, 3180490, 6360980, 12721960]

約数ペア:

[(1, 12721960), (2, 6360980), (4, 3180490), (5, 2544392), (8, 1590245), (10, 1272196), (20, 636098), (40, 318049), (47, 270680), (67, 189880), (94, 135340), (101, 125960), (134, 94940), (188, 67670), (202, 62980), (235, 54136), (268, 47470), (335, 37976), (376, 33835), (404, 31490), (470, 27068), (505, 25192), (536, 23735), (670, 18988), (808, 15745), (940, 13534), (1010, 12596), (1340, 9494), (1880, 6767), (2020, 6298), (2680, 4747), (3149, 4040)]