19685360

素因数分解:

$2^4\times 5^1\times {\mathrm{103}}^1\times {\mathrm{2389}}^1$

素因数の和:2505

約数の個数: 40

約数和(自身を含む): 46232160

約数和(自身を除く): 26546800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 103, 206, 412, 515, 824, 1030, 1648, 2060, 2389, 4120, 4778, 8240, 9556, 11945, 19112, 23890, 38224, 47780, 95560, 191120, 246067, 492134, 984268, 1230335, 1968536, 2460670, 3937072, 4921340, 9842680, 19685360]

約数ペア:

[(1, 19685360), (2, 9842680), (4, 4921340), (5, 3937072), (8, 2460670), (10, 1968536), (16, 1230335), (20, 984268), (40, 492134), (80, 246067), (103, 191120), (206, 95560), (412, 47780), (515, 38224), (824, 23890), (1030, 19112), (1648, 11945), (2060, 9556), (2389, 8240), (4120, 4778)]