21311556

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{6857}}^1$

素因数の和:6908

約数の個数: 48

約数和(自身を含む): 58375296

約数和(自身を除く): 37063740

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 37, 42, 74, 84, 111, 148, 222, 259, 444, 518, 777, 1036, 1554, 3108, 6857, 13714, 20571, 27428, 41142, 47999, 82284, 95998, 143997, 191996, 253709, 287994, 507418, 575988, 761127, 1014836, 1522254, 1775963, 3044508, 3551926, 5327889, 7103852, 10655778, 21311556]

約数ペア:

[(1, 21311556), (2, 10655778), (3, 7103852), (4, 5327889), (6, 3551926), (7, 3044508), (12, 1775963), (14, 1522254), (21, 1014836), (28, 761127), (37, 575988), (42, 507418), (74, 287994), (84, 253709), (111, 191996), (148, 143997), (222, 95998), (259, 82284), (444, 47999), (518, 41142), (777, 27428), (1036, 20571), (1554, 13714), (3108, 6857)]