21990959960

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1151}}^1\times {\mathrm{28097}}^1$

素因数の和:29276

約数の個数: 64

約数和(自身を含む): 52437611520

約数和(自身を除く): 30446651560

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 1151, 2302, 4604, 5755, 9208, 11510, 19567, 23020, 28097, 39134, 46040, 56194, 78268, 97835, 112388, 140485, 156536, 195670, 224776, 280970, 391340, 477649, 561940, 782680, 955298, 1123880, 1910596, 2388245, 3821192, 4776490, 9552980, 19105960, 32339647, 64679294, 129358588, 161698235, 258717176, 323396470, 549773999, 646792940, 1099547998, 1293585880, 2199095996, 2748869995, 4398191992, 5497739990, 10995479980, 21990959960]

約数ペア:

[(1, 21990959960), (2, 10995479980), (4, 5497739990), (5, 4398191992), (8, 2748869995), (10, 2199095996), (17, 1293585880), (20, 1099547998), (34, 646792940), (40, 549773999), (68, 323396470), (85, 258717176), (136, 161698235), (170, 129358588), (340, 64679294), (680, 32339647), (1151, 19105960), (2302, 9552980), (4604, 4776490), (5755, 3821192), (9208, 2388245), (11510, 1910596), (19567, 1123880), (23020, 955298), (28097, 782680), (39134, 561940), (46040, 477649), (56194, 391340), (78268, 280970), (97835, 224776), (112388, 195670), (140485, 156536)]