156739820

素因数分解:

$2^2\times 5^1\times {\mathrm{109}}^1\times {\mathrm{71899}}^1$

素因数の和:72017

約数の個数: 24

約数和(自身を含む): 332178000

約数和(自身を除く): 175438180

約数列:

[1, 2, 4, 5, 10, 20, 109, 218, 436, 545, 1090, 2180, 71899, 143798, 287596, 359495, 718990, 1437980, 7836991, 15673982, 31347964, 39184955, 78369910, 156739820]

約数ペア:

[(1, 156739820), (2, 78369910), (4, 39184955), (5, 31347964), (10, 15673982), (20, 7836991), (109, 1437980), (218, 718990), (436, 359495), (545, 287596), (1090, 143798), (2180, 71899)]