1990778890

素因数分解:

$2^1\times 5^1\times {\mathrm{251}}^1\times {\mathrm{793139}}^1$

素因数の和:793397

約数の個数: 16

約数和(自身を含む): 3597683040

約数和(自身を除く): 1606904150

約数列:

[1, 2, 5, 10, 251, 502, 1255, 2510, 793139, 1586278, 3965695, 7931390, 199077889, 398155778, 995389445, 1990778890]

約数ペア:

[(1, 1990778890), (2, 995389445), (5, 398155778), (10, 199077889), (251, 7931390), (502, 3965695), (1255, 1586278), (2510, 793139)]