20849990

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{2503}}^1$

素因数の和:2541

約数の個数: 48

約数和(自身を含む): 46243872

約数和(自身を除く): 25393882

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 49, 70, 85, 98, 119, 170, 238, 245, 490, 595, 833, 1190, 1666, 2503, 4165, 5006, 8330, 12515, 17521, 25030, 35042, 42551, 85102, 87605, 122647, 175210, 212755, 245294, 297857, 425510, 595714, 613235, 1226470, 1489285, 2084999, 2978570, 4169998, 10424995, 20849990]

約数ペア:

[(1, 20849990), (2, 10424995), (5, 4169998), (7, 2978570), (10, 2084999), (14, 1489285), (17, 1226470), (34, 613235), (35, 595714), (49, 425510), (70, 297857), (85, 245294), (98, 212755), (119, 175210), (170, 122647), (238, 87605), (245, 85102), (490, 42551), (595, 35042), (833, 25030), (1190, 17521), (1666, 12515), (2503, 8330), (4165, 5006)]