71780420

素因数分解:

$2^2\times 5^1\times {\mathrm{347}}^1\times {\mathrm{10343}}^1$

素因数の和:10699

約数の個数: 24

約数和(自身を含む): 151187904

約数和(自身を除く): 79407484

約数列:

[1, 2, 4, 5, 10, 20, 347, 694, 1388, 1735, 3470, 6940, 10343, 20686, 41372, 51715, 103430, 206860, 3589021, 7178042, 14356084, 17945105, 35890210, 71780420]

約数ペア:

[(1, 71780420), (2, 35890210), (4, 17945105), (5, 14356084), (10, 7178042), (20, 3589021), (347, 206860), (694, 103430), (1388, 51715), (1735, 41372), (3470, 20686), (6940, 10343)]