21784568

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{233}}^1$

素因数の和:312

約数の個数: 64

約数和(自身を含む): 47174400

約数和(自身を除く): 25389832

約数列:

[1, 2, 4, 8, 13, 26, 29, 31, 52, 58, 62, 104, 116, 124, 232, 233, 248, 377, 403, 466, 754, 806, 899, 932, 1508, 1612, 1798, 1864, 3016, 3029, 3224, 3596, 6058, 6757, 7192, 7223, 11687, 12116, 13514, 14446, 23374, 24232, 27028, 28892, 46748, 54056, 57784, 87841, 93496, 93899, 175682, 187798, 209467, 351364, 375596, 418934, 702728, 751192, 837868, 1675736, 2723071, 5446142, 10892284, 21784568]

約数ペア:

[(1, 21784568), (2, 10892284), (4, 5446142), (8, 2723071), (13, 1675736), (26, 837868), (29, 751192), (31, 702728), (52, 418934), (58, 375596), (62, 351364), (104, 209467), (116, 187798), (124, 175682), (232, 93899), (233, 93496), (248, 87841), (377, 57784), (403, 54056), (466, 46748), (754, 28892), (806, 27028), (899, 24232), (932, 23374), (1508, 14446), (1612, 13514), (1798, 12116), (1864, 11687), (3016, 7223), (3029, 7192), (3224, 6757), (3596, 6058)]