19617520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^2\times {\mathrm{1451}}^1$

素因数の和:1490

約数の個数: 60

約数和(自身を含む): 49423176

約数和(自身を除く): 29805656

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 520, 676, 845, 1040, 1352, 1451, 1690, 2704, 2902, 3380, 5804, 6760, 7255, 11608, 13520, 14510, 18863, 23216, 29020, 37726, 58040, 75452, 94315, 116080, 150904, 188630, 245219, 301808, 377260, 490438, 754520, 980876, 1226095, 1509040, 1961752, 2452190, 3923504, 4904380, 9808760, 19617520]

約数ペア:

[(1, 19617520), (2, 9808760), (4, 4904380), (5, 3923504), (8, 2452190), (10, 1961752), (13, 1509040), (16, 1226095), (20, 980876), (26, 754520), (40, 490438), (52, 377260), (65, 301808), (80, 245219), (104, 188630), (130, 150904), (169, 116080), (208, 94315), (260, 75452), (338, 58040), (520, 37726), (676, 29020), (845, 23216), (1040, 18863), (1352, 14510), (1451, 13520), (1690, 11608), (2704, 7255), (2902, 6760), (3380, 5804)]