21248084

素因数分解:

$2^2\times {\mathrm{11}}^3\times {\mathrm{13}}^1\times {\mathrm{307}}^1$

素因数の和:357

約数の個数: 48

約数和(自身を含む): 44189376

約数和(自身を除く): 22941292

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 52, 121, 143, 242, 286, 307, 484, 572, 614, 1228, 1331, 1573, 2662, 3146, 3377, 3991, 5324, 6292, 6754, 7982, 13508, 15964, 17303, 34606, 37147, 43901, 69212, 74294, 87802, 148588, 175604, 408617, 482911, 817234, 965822, 1634468, 1931644, 5312021, 10624042, 21248084]

約数ペア:

[(1, 21248084), (2, 10624042), (4, 5312021), (11, 1931644), (13, 1634468), (22, 965822), (26, 817234), (44, 482911), (52, 408617), (121, 175604), (143, 148588), (242, 87802), (286, 74294), (307, 69212), (484, 43901), (572, 37147), (614, 34606), (1228, 17303), (1331, 15964), (1573, 13508), (2662, 7982), (3146, 6754), (3377, 6292), (3991, 5324)]