20439800

素因数分解:

$2^3\times 5^2\times {\mathrm{102199}}^1$

素因数の和:102215

約数の個数: 24

約数和(自身を含む): 47523000

約数和(自身を除く): 27083200

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200, 102199, 204398, 408796, 510995, 817592, 1021990, 2043980, 2554975, 4087960, 5109950, 10219900, 20439800]

約数ペア:

[(1, 20439800), (2, 10219900), (4, 5109950), (5, 4087960), (8, 2554975), (10, 2043980), (20, 1021990), (25, 817592), (40, 510995), (50, 408796), (100, 204398), (200, 102199)]