21708473480

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{887}}^1\times {\mathrm{1993}}^1$

素因数の和:3198

約数の個数: 64

約数和(自身を含む): 49083027840

約数和(自身を除く): 27374554360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 887, 1228, 1535, 1774, 1993, 2456, 3070, 3548, 3986, 4435, 6140, 7096, 7972, 8870, 9965, 12280, 15944, 17740, 19930, 35480, 39860, 79720, 272309, 544618, 611851, 1089236, 1223702, 1361545, 1767791, 2178472, 2447404, 2723090, 3059255, 3535582, 4894808, 5446180, 6118510, 7071164, 8838955, 10892360, 12237020, 14142328, 17677910, 24474040, 35355820, 70711640, 542711837, 1085423674, 2170847348, 2713559185, 4341694696, 5427118370, 10854236740, 21708473480]

約数ペア:

[(1, 21708473480), (2, 10854236740), (4, 5427118370), (5, 4341694696), (8, 2713559185), (10, 2170847348), (20, 1085423674), (40, 542711837), (307, 70711640), (614, 35355820), (887, 24474040), (1228, 17677910), (1535, 14142328), (1774, 12237020), (1993, 10892360), (2456, 8838955), (3070, 7071164), (3548, 6118510), (3986, 5446180), (4435, 4894808), (6140, 3535582), (7096, 3059255), (7972, 2723090), (8870, 2447404), (9965, 2178472), (12280, 1767791), (15944, 1361545), (17740, 1223702), (19930, 1089236), (35480, 611851), (39860, 544618), (79720, 272309)]