989950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{1523}}^1$

素因数の和:1548

約数の個数: 24

約数和(自身を含む): 1984248

約数和(自身を除く): 994298

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 325, 650, 1523, 3046, 7615, 15230, 19799, 38075, 39598, 76150, 98995, 197990, 494975, 989950]

約数ペア:

[(1, 989950), (2, 494975), (5, 197990), (10, 98995), (13, 76150), (25, 39598), (26, 38075), (50, 19799), (65, 15230), (130, 7615), (325, 3046), (650, 1523)]