21873320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{191}}^1\times {\mathrm{409}}^1$

素因数の和:618

約数の個数: 64

約数和(自身を含む): 56678400

約数和(自身を除く): 34805080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 191, 280, 382, 409, 764, 818, 955, 1337, 1528, 1636, 1910, 2045, 2674, 2863, 3272, 3820, 4090, 5348, 5726, 6685, 7640, 8180, 10696, 11452, 13370, 14315, 16360, 22904, 26740, 28630, 53480, 57260, 78119, 114520, 156238, 312476, 390595, 546833, 624952, 781190, 1093666, 1562380, 2187332, 2734165, 3124760, 4374664, 5468330, 10936660, 21873320]

約数ペア:

[(1, 21873320), (2, 10936660), (4, 5468330), (5, 4374664), (7, 3124760), (8, 2734165), (10, 2187332), (14, 1562380), (20, 1093666), (28, 781190), (35, 624952), (40, 546833), (56, 390595), (70, 312476), (140, 156238), (191, 114520), (280, 78119), (382, 57260), (409, 53480), (764, 28630), (818, 26740), (955, 22904), (1337, 16360), (1528, 14315), (1636, 13370), (1910, 11452), (2045, 10696), (2674, 8180), (2863, 7640), (3272, 6685), (3820, 5726), (4090, 5348)]