16380153985

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{389}}^1\times {\mathrm{647821}}^1$

素因数の和:648228

約数の個数: 16

約数和(自身を含む): 21222648720

約数和(自身を除く): 4842494735

約数列:

[1, 5, 13, 65, 389, 1945, 5057, 25285, 647821, 3239105, 8421673, 42108365, 252002369, 1260011845, 3276030797, 16380153985]

約数ペア:

[(1, 16380153985), (5, 3276030797), (13, 1260011845), (65, 252002369), (389, 42108365), (1945, 8421673), (5057, 3239105), (25285, 647821)]