21955330

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{71}}^1\times {\mathrm{107}}^1$

素因数の和:219

約数の個数: 48

約数和(自身を含む): 42970176

約数和(自身を除く): 21014846

約数列:

[1, 2, 5, 10, 17, 34, 71, 85, 107, 142, 170, 214, 289, 355, 535, 578, 710, 1070, 1207, 1445, 1819, 2414, 2890, 3638, 6035, 7597, 9095, 12070, 15194, 18190, 20519, 30923, 37985, 41038, 61846, 75970, 102595, 129149, 154615, 205190, 258298, 309230, 645745, 1291490, 2195533, 4391066, 10977665, 21955330]

約数ペア:

[(1, 21955330), (2, 10977665), (5, 4391066), (10, 2195533), (17, 1291490), (34, 645745), (71, 309230), (85, 258298), (107, 205190), (142, 154615), (170, 129149), (214, 102595), (289, 75970), (355, 61846), (535, 41038), (578, 37985), (710, 30923), (1070, 20519), (1207, 18190), (1445, 15194), (1819, 12070), (2414, 9095), (2890, 7597), (3638, 6035)]