87121990

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{110281}}^1$

素因数の和:110367

約数の個数: 16

約数和(自身を含む): 158806080

約数和(自身を除く): 71684090

約数列:

[1, 2, 5, 10, 79, 158, 395, 790, 110281, 220562, 551405, 1102810, 8712199, 17424398, 43560995, 87121990]

約数ペア:

[(1, 87121990), (2, 43560995), (5, 17424398), (10, 8712199), (79, 1102810), (158, 551405), (395, 220562), (790, 110281)]