20638710

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{5333}}^1$

素因数の和:5389

約数の個数: 48

約数和(自身を含む): 54918864

約数和(自身を除く): 34280154

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 86, 90, 129, 215, 258, 387, 430, 645, 774, 1290, 1935, 3870, 5333, 10666, 15999, 26665, 31998, 47997, 53330, 79995, 95994, 159990, 229319, 239985, 458638, 479970, 687957, 1146595, 1375914, 2063871, 2293190, 3439785, 4127742, 6879570, 10319355, 20638710]

約数ペア:

[(1, 20638710), (2, 10319355), (3, 6879570), (5, 4127742), (6, 3439785), (9, 2293190), (10, 2063871), (15, 1375914), (18, 1146595), (30, 687957), (43, 479970), (45, 458638), (86, 239985), (90, 229319), (129, 159990), (215, 95994), (258, 79995), (387, 53330), (430, 47997), (645, 31998), (774, 26665), (1290, 15999), (1935, 10666), (3870, 5333)]