21638664

素因数分解:

$2^3\times 3^5\times {\mathrm{11131}}^1$

素因数の和:11152

約数の個数: 48

約数和(自身を含む): 60780720

約数和(自身を除く): 39142056

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 243, 324, 486, 648, 972, 1944, 11131, 22262, 33393, 44524, 66786, 89048, 100179, 133572, 200358, 267144, 300537, 400716, 601074, 801432, 901611, 1202148, 1803222, 2404296, 2704833, 3606444, 5409666, 7212888, 10819332, 21638664]

約数ペア:

[(1, 21638664), (2, 10819332), (3, 7212888), (4, 5409666), (6, 3606444), (8, 2704833), (9, 2404296), (12, 1803222), (18, 1202148), (24, 901611), (27, 801432), (36, 601074), (54, 400716), (72, 300537), (81, 267144), (108, 200358), (162, 133572), (216, 100179), (243, 89048), (324, 66786), (486, 44524), (648, 33393), (972, 22262), (1944, 11131)]