209969240

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{403787}}^1$

素因数の和:403811

約数の個数: 32

約数和(自身を含む): 508772880

約数和(自身を除く): 298803640

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 403787, 807574, 1615148, 2018935, 3230296, 4037870, 5249231, 8075740, 10498462, 16151480, 20996924, 26246155, 41993848, 52492310, 104984620, 209969240]

約数ペア:

[(1, 209969240), (2, 104984620), (4, 52492310), (5, 41993848), (8, 26246155), (10, 20996924), (13, 16151480), (20, 10498462), (26, 8075740), (40, 5249231), (52, 4037870), (65, 3230296), (104, 2018935), (130, 1615148), (260, 807574), (520, 403787)]