21500769

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{2609}}^1$

素因数の和:2720

約数の個数: 16

約数和(自身を含む): 29816640

約数和(自身を除く): 8315871

約数列:

[1, 3, 41, 67, 123, 201, 2609, 2747, 7827, 8241, 106969, 174803, 320907, 524409, 7166923, 21500769]

約数ペア:

[(1, 21500769), (3, 7166923), (41, 524409), (67, 320907), (123, 174803), (201, 106969), (2609, 8241), (2747, 7827)]