42700780

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{21139}}^1$

素因数の和:21249

約数の個数: 24

約数和(自身を含む): 90563760

約数和(自身を除く): 47862980

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 404, 505, 1010, 2020, 21139, 42278, 84556, 105695, 211390, 422780, 2135039, 4270078, 8540156, 10675195, 21350390, 42700780]

約数ペア:

[(1, 42700780), (2, 21350390), (4, 10675195), (5, 8540156), (10, 4270078), (20, 2135039), (101, 422780), (202, 211390), (404, 105695), (505, 84556), (1010, 42278), (2020, 21139)]