21907684

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{151}}^1$

素因数の和:280

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 20992796

約数列:

[1, 2, 4, 19, 23, 38, 46, 76, 83, 92, 151, 166, 302, 332, 437, 604, 874, 1577, 1748, 1909, 2869, 3154, 3473, 3818, 5738, 6308, 6946, 7636, 11476, 12533, 13892, 25066, 36271, 50132, 65987, 72542, 131974, 145084, 238127, 263948, 288259, 476254, 576518, 952508, 1153036, 5476921, 10953842, 21907684]

約数ペア:

[(1, 21907684), (2, 10953842), (4, 5476921), (19, 1153036), (23, 952508), (38, 576518), (46, 476254), (76, 288259), (83, 263948), (92, 238127), (151, 145084), (166, 131974), (302, 72542), (332, 65987), (437, 50132), (604, 36271), (874, 25066), (1577, 13892), (1748, 12533), (1909, 11476), (2869, 7636), (3154, 6946), (3473, 6308), (3818, 5738)]