64880380

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{32119}}^1$

素因数の和:32229

約数の個数: 24

約数和(自身を含む): 137602080

約数和(自身を除く): 72721700

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 32119, 64238, 128476, 160595, 321190, 642380, 3244019, 6488038, 12976076, 16220095, 32440190, 64880380]

約数ペア:

[(1, 64880380), (2, 32440190), (4, 16220095), (5, 12976076), (10, 6488038), (20, 3244019), (101, 642380), (202, 321190), (404, 160595), (505, 128476), (1010, 64238), (2020, 32119)]