21808605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1229}}^1$

素因数の和:1270

約数の個数: 48

約数和(自身を含む): 43217280

約数和(自身を除く): 21408675

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 169, 195, 273, 455, 507, 845, 1183, 1229, 1365, 2535, 3549, 3687, 5915, 6145, 8603, 15977, 17745, 18435, 25809, 43015, 47931, 79885, 111839, 129045, 207701, 239655, 335517, 559195, 623103, 1038505, 1453907, 1677585, 3115515, 4361721, 7269535, 21808605]

約数ペア:

[(1, 21808605), (3, 7269535), (5, 4361721), (7, 3115515), (13, 1677585), (15, 1453907), (21, 1038505), (35, 623103), (39, 559195), (65, 335517), (91, 239655), (105, 207701), (169, 129045), (195, 111839), (273, 79885), (455, 47931), (507, 43015), (845, 25809), (1183, 18435), (1229, 17745), (1365, 15977), (2535, 8603), (3549, 6145), (3687, 5915)]