21215068

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{12421}}^1$

素因数の和:12493

約数の個数: 24

約数和(自身を含む): 43129184

約数和(自身を除く): 21914116

約数列:

[1, 2, 4, 7, 14, 28, 61, 122, 244, 427, 854, 1708, 12421, 24842, 49684, 86947, 173894, 347788, 757681, 1515362, 3030724, 5303767, 10607534, 21215068]

約数ペア:

[(1, 21215068), (2, 10607534), (4, 5303767), (7, 3030724), (14, 1515362), (28, 757681), (61, 347788), (122, 173894), (244, 86947), (427, 49684), (854, 24842), (1708, 12421)]