89991260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{269}}^1\times {\mathrm{389}}^1$

素因数の和:710

約数の個数: 48

約数和(自身を含む): 194594400

約数和(自身を除く): 104603140

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 269, 389, 430, 538, 778, 860, 1076, 1345, 1556, 1945, 2690, 3890, 5380, 7780, 11567, 16727, 23134, 33454, 46268, 57835, 66908, 83635, 104641, 115670, 167270, 209282, 231340, 334540, 418564, 523205, 1046410, 2092820, 4499563, 8999126, 17998252, 22497815, 44995630, 89991260]

約数ペア:

[(1, 89991260), (2, 44995630), (4, 22497815), (5, 17998252), (10, 8999126), (20, 4499563), (43, 2092820), (86, 1046410), (172, 523205), (215, 418564), (269, 334540), (389, 231340), (430, 209282), (538, 167270), (778, 115670), (860, 104641), (1076, 83635), (1345, 66908), (1556, 57835), (1945, 46268), (2690, 33454), (3890, 23134), (5380, 16727), (7780, 11567)]