18827679

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{103}}^1\times {\mathrm{109}}^1$

素因数の和:271

約数の個数: 32

約数和(自身を含む): 28188160

約数和(自身を除く): 9360481

約数列:

[1, 3, 13, 39, 43, 103, 109, 129, 309, 327, 559, 1339, 1417, 1677, 4017, 4251, 4429, 4687, 11227, 13287, 14061, 33681, 57577, 60931, 145951, 172731, 182793, 437853, 482761, 1448283, 6275893, 18827679]

約数ペア:

[(1, 18827679), (3, 6275893), (13, 1448283), (39, 482761), (43, 437853), (103, 182793), (109, 172731), (129, 145951), (309, 60931), (327, 57577), (559, 33681), (1339, 14061), (1417, 13287), (1677, 11227), (4017, 4687), (4251, 4429)]