20397996

素因数分解:

$2^2\times 3^2\times {\mathrm{43}}^1\times {\mathrm{13177}}^1$

素因数の和:13230

約数の個数: 36

約数和(自身を含む): 52764712

約数和(自身を除く): 32366716

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 43, 86, 129, 172, 258, 387, 516, 774, 1548, 13177, 26354, 39531, 52708, 79062, 118593, 158124, 237186, 474372, 566611, 1133222, 1699833, 2266444, 3399666, 5099499, 6799332, 10198998, 20397996]

約数ペア:

[(1, 20397996), (2, 10198998), (3, 6799332), (4, 5099499), (6, 3399666), (9, 2266444), (12, 1699833), (18, 1133222), (36, 566611), (43, 474372), (86, 237186), (129, 158124), (172, 118593), (258, 79062), (387, 52708), (516, 39531), (774, 26354), (1548, 13177)]