71405980

素因数分解:

$2^2\times 5^1\times {\mathrm{419}}^1\times {\mathrm{8521}}^1$

素因数の和:8949

約数の個数: 24

約数和(自身を含む): 150328080

約数和(自身を除く): 78922100

約数列:

[1, 2, 4, 5, 10, 20, 419, 838, 1676, 2095, 4190, 8380, 8521, 17042, 34084, 42605, 85210, 170420, 3570299, 7140598, 14281196, 17851495, 35702990, 71405980]

約数ペア:

[(1, 71405980), (2, 35702990), (4, 17851495), (5, 14281196), (10, 7140598), (20, 3570299), (419, 170420), (838, 85210), (1676, 42605), (2095, 34084), (4190, 17042), (8380, 8521)]