81819153

素因数分解:

$3^4\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:220

約数の個数: 60

約数和(自身を含む): 136400880

約数和(自身を除く): 54581727

約数列:

[1, 3, 9, 13, 27, 39, 43, 81, 117, 129, 139, 169, 351, 387, 417, 507, 559, 1053, 1161, 1251, 1521, 1677, 1807, 3483, 3753, 4563, 5031, 5421, 5977, 7267, 11259, 13689, 15093, 16263, 17931, 21801, 23491, 45279, 48789, 53793, 65403, 70473, 77701, 146367, 161379, 196209, 211419, 233103, 484137, 588627, 634257, 699309, 1010113, 1902771, 2097927, 3030339, 6293781, 9091017, 27273051, 81819153]

約数ペア:

[(1, 81819153), (3, 27273051), (9, 9091017), (13, 6293781), (27, 3030339), (39, 2097927), (43, 1902771), (81, 1010113), (117, 699309), (129, 634257), (139, 588627), (169, 484137), (351, 233103), (387, 211419), (417, 196209), (507, 161379), (559, 146367), (1053, 77701), (1161, 70473), (1251, 65403), (1521, 53793), (1677, 48789), (1807, 45279), (3483, 23491), (3753, 21801), (4563, 17931), (5031, 16263), (5421, 15093), (5977, 13689), (7267, 11259)]