19900713

素因数分解:

$3^1\times 7^2\times {\mathrm{331}}^1\times {\mathrm{409}}^1$

素因数の和:757

約数の個数: 24

約数和(自身を含む): 31035360

約数和(自身を除く): 11134647

約数列:

[1, 3, 7, 21, 49, 147, 331, 409, 993, 1227, 2317, 2863, 6951, 8589, 16219, 20041, 48657, 60123, 135379, 406137, 947653, 2842959, 6633571, 19900713]

約数ペア:

[(1, 19900713), (3, 6633571), (7, 2842959), (21, 947653), (49, 406137), (147, 135379), (331, 60123), (409, 48657), (993, 20041), (1227, 16219), (2317, 8589), (2863, 6951)]