21742440

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{409}}^1\times {\mathrm{443}}^1$

素因数の和:866

約数の個数: 64

約数和(自身を含む): 65534400

約数和(自身を除く): 43791960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 409, 443, 818, 886, 1227, 1329, 1636, 1772, 2045, 2215, 2454, 2658, 3272, 3544, 4090, 4430, 4908, 5316, 6135, 6645, 8180, 8860, 9816, 10632, 12270, 13290, 16360, 17720, 24540, 26580, 49080, 53160, 181187, 362374, 543561, 724748, 905935, 1087122, 1449496, 1811870, 2174244, 2717805, 3623740, 4348488, 5435610, 7247480, 10871220, 21742440]

約数ペア:

[(1, 21742440), (2, 10871220), (3, 7247480), (4, 5435610), (5, 4348488), (6, 3623740), (8, 2717805), (10, 2174244), (12, 1811870), (15, 1449496), (20, 1087122), (24, 905935), (30, 724748), (40, 543561), (60, 362374), (120, 181187), (409, 53160), (443, 49080), (818, 26580), (886, 24540), (1227, 17720), (1329, 16360), (1636, 13290), (1772, 12270), (2045, 10632), (2215, 9816), (2454, 8860), (2658, 8180), (3272, 6645), (3544, 6135), (4090, 5316), (4430, 4908)]