21709516

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{103}}^1$

素因数の和:238

約数の個数: 48

約数和(自身を含む): 41932800

約数和(自身を除く): 20223284

約数列:

[1, 2, 4, 23, 29, 46, 58, 79, 92, 103, 116, 158, 206, 316, 412, 667, 1334, 1817, 2291, 2369, 2668, 2987, 3634, 4582, 4738, 5974, 7268, 8137, 9164, 9476, 11948, 16274, 32548, 52693, 68701, 105386, 137402, 187151, 210772, 235973, 274804, 374302, 471946, 748604, 943892, 5427379, 10854758, 21709516]

約数ペア:

[(1, 21709516), (2, 10854758), (4, 5427379), (23, 943892), (29, 748604), (46, 471946), (58, 374302), (79, 274804), (92, 235973), (103, 210772), (116, 187151), (158, 137402), (206, 105386), (316, 68701), (412, 52693), (667, 32548), (1334, 16274), (1817, 11948), (2291, 9476), (2369, 9164), (2668, 8137), (2987, 7268), (3634, 5974), (4582, 4738)]