21555612

素因数分解:

$2^2\times 3^3\times {\mathrm{13}}^2\times {\mathrm{1181}}^1$

素因数の和:1220

約数の個数: 72

約数和(自身を含む): 60565680

約数和(自身を除く): 39010068

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 27, 36, 39, 52, 54, 78, 108, 117, 156, 169, 234, 338, 351, 468, 507, 676, 702, 1014, 1181, 1404, 1521, 2028, 2362, 3042, 3543, 4563, 4724, 6084, 7086, 9126, 10629, 14172, 15353, 18252, 21258, 30706, 31887, 42516, 46059, 61412, 63774, 92118, 127548, 138177, 184236, 199589, 276354, 399178, 414531, 552708, 598767, 798356, 829062, 1197534, 1658124, 1796301, 2395068, 3592602, 5388903, 7185204, 10777806, 21555612]

約数ペア:

[(1, 21555612), (2, 10777806), (3, 7185204), (4, 5388903), (6, 3592602), (9, 2395068), (12, 1796301), (13, 1658124), (18, 1197534), (26, 829062), (27, 798356), (36, 598767), (39, 552708), (52, 414531), (54, 399178), (78, 276354), (108, 199589), (117, 184236), (156, 138177), (169, 127548), (234, 92118), (338, 63774), (351, 61412), (468, 46059), (507, 42516), (676, 31887), (702, 30706), (1014, 21258), (1181, 18252), (1404, 15353), (1521, 14172), (2028, 10629), (2362, 9126), (3042, 7086), (3543, 6084), (4563, 4724)]