21969955

素因数分解:

$5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{3851}}^1$

素因数の和:4026

約数の個数: 16

約数和(自身を含む): 30322944

約数和(自身を除く): 8352989

約数列:

[1, 5, 7, 35, 163, 815, 1141, 3851, 5705, 19255, 26957, 134785, 627713, 3138565, 4393991, 21969955]

約数ペア:

[(1, 21969955), (5, 4393991), (7, 3138565), (35, 627713), (163, 134785), (815, 26957), (1141, 19255), (3851, 5705)]