21625604

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{491}}^1$

素因数の和:537

約数の個数: 72

約数和(自身を含む): 51301824

約数和(自身を除く): 29676220

約数列:

[1, 2, 4, 7, 11, 13, 14, 22, 26, 28, 44, 52, 77, 91, 121, 143, 154, 182, 242, 286, 308, 364, 484, 491, 572, 847, 982, 1001, 1573, 1694, 1964, 2002, 3146, 3388, 3437, 4004, 5401, 6292, 6383, 6874, 10802, 11011, 12766, 13748, 21604, 22022, 25532, 37807, 44044, 44681, 59411, 70213, 75614, 89362, 118822, 140426, 151228, 178724, 237644, 280852, 415877, 491491, 772343, 831754, 982982, 1544686, 1663508, 1965964, 3089372, 5406401, 10812802, 21625604]

約数ペア:

[(1, 21625604), (2, 10812802), (4, 5406401), (7, 3089372), (11, 1965964), (13, 1663508), (14, 1544686), (22, 982982), (26, 831754), (28, 772343), (44, 491491), (52, 415877), (77, 280852), (91, 237644), (121, 178724), (143, 151228), (154, 140426), (182, 118822), (242, 89362), (286, 75614), (308, 70213), (364, 59411), (484, 44681), (491, 44044), (572, 37807), (847, 25532), (982, 22022), (1001, 21604), (1573, 13748), (1694, 12766), (1964, 11011), (2002, 10802), (3146, 6874), (3388, 6383), (3437, 6292), (4004, 5401)]