19912698

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1979}}^1$

素因数の和:2043

約数の個数: 48

約数和(自身を含む): 47567520

約数和(自身を除く): 27654822

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 43, 78, 86, 117, 129, 234, 258, 387, 559, 774, 1118, 1677, 1979, 3354, 3958, 5031, 5937, 10062, 11874, 17811, 25727, 35622, 51454, 77181, 85097, 154362, 170194, 231543, 255291, 463086, 510582, 765873, 1106261, 1531746, 2212522, 3318783, 6637566, 9956349, 19912698]

約数ペア:

[(1, 19912698), (2, 9956349), (3, 6637566), (6, 3318783), (9, 2212522), (13, 1531746), (18, 1106261), (26, 765873), (39, 510582), (43, 463086), (78, 255291), (86, 231543), (117, 170194), (129, 154362), (234, 85097), (258, 77181), (387, 51454), (559, 35622), (774, 25727), (1118, 17811), (1677, 11874), (1979, 10062), (3354, 5937), (3958, 5031)]