20859090

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1399}}^1$

素因数の和:1487

約数の個数: 64

約数和(自身を含む): 58060800

約数和(自身を除く): 37201710

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 71, 105, 142, 210, 213, 355, 426, 497, 710, 994, 1065, 1399, 1491, 2130, 2485, 2798, 2982, 4197, 4970, 6995, 7455, 8394, 9793, 13990, 14910, 19586, 20985, 29379, 41970, 48965, 58758, 97930, 99329, 146895, 198658, 293790, 297987, 496645, 595974, 695303, 993290, 1390606, 1489935, 2085909, 2979870, 3476515, 4171818, 6953030, 10429545, 20859090]

約数ペア:

[(1, 20859090), (2, 10429545), (3, 6953030), (5, 4171818), (6, 3476515), (7, 2979870), (10, 2085909), (14, 1489935), (15, 1390606), (21, 993290), (30, 695303), (35, 595974), (42, 496645), (70, 297987), (71, 293790), (105, 198658), (142, 146895), (210, 99329), (213, 97930), (355, 58758), (426, 48965), (497, 41970), (710, 29379), (994, 20985), (1065, 19586), (1399, 14910), (1491, 13990), (2130, 9793), (2485, 8394), (2798, 7455), (2982, 6995), (4197, 4970)]