31120120

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{7703}}^1$

素因数の和:7815

約数の個数: 32

約数和(自身を含む): 70722720

約数和(自身を除く): 39602600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 7703, 15406, 30812, 38515, 61624, 77030, 154060, 308120, 778003, 1556006, 3112012, 3890015, 6224024, 7780030, 15560060, 31120120]

約数ペア:

[(1, 31120120), (2, 15560060), (4, 7780030), (5, 6224024), (8, 3890015), (10, 3112012), (20, 1556006), (40, 778003), (101, 308120), (202, 154060), (404, 77030), (505, 61624), (808, 38515), (1010, 30812), (2020, 15406), (4040, 7703)]