19866640

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2411}}^1$

素因数の和:2527

約数の個数: 40

約数和(自身を含む): 46657728

約数和(自身を除く): 26791088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 2411, 4120, 4822, 8240, 9644, 12055, 19288, 24110, 38576, 48220, 96440, 192880, 248333, 496666, 993332, 1241665, 1986664, 2483330, 3973328, 4966660, 9933320, 19866640]

約数ペア:

[(1, 19866640), (2, 9933320), (4, 4966660), (5, 3973328), (8, 2483330), (10, 1986664), (16, 1241665), (20, 993332), (40, 496666), (80, 248333), (103, 192880), (206, 96440), (412, 48220), (515, 38576), (824, 24110), (1030, 19288), (1648, 12055), (2060, 9644), (2411, 8240), (4120, 4822)]