31911243

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{2851}}^1$

素因数の和:2915

約数の個数: 32

約数和(自身を含む): 53663232

約数和(自身を除く): 21751989

約数列:

[1, 3, 7, 13, 21, 39, 41, 91, 123, 273, 287, 533, 861, 1599, 2851, 3731, 8553, 11193, 19957, 37063, 59871, 111189, 116891, 259441, 350673, 778323, 818237, 1519583, 2454711, 4558749, 10637081, 31911243]

約数ペア:

[(1, 31911243), (3, 10637081), (7, 4558749), (13, 2454711), (21, 1519583), (39, 818237), (41, 778323), (91, 350673), (123, 259441), (273, 116891), (287, 111189), (533, 59871), (861, 37063), (1599, 19957), (2851, 11193), (3731, 8553)]