400023460

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{183497}}^1$

素因数の和:183615

約数の個数: 24

約数和(自身を含む): 847760760

約数和(自身を除く): 447737300

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 183497, 366994, 733988, 917485, 1834970, 3669940, 20001173, 40002346, 80004692, 100005865, 200011730, 400023460]

約数ペア:

[(1, 400023460), (2, 200011730), (4, 100005865), (5, 80004692), (10, 40002346), (20, 20001173), (109, 3669940), (218, 1834970), (436, 917485), (545, 733988), (1090, 366994), (2180, 183497)]