217910020

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{389}}^1\times {\mathrm{757}}^1$

素因数の和:1192

約数の個数: 48

約数和(自身を含む): 471809520

約数和(自身を除く): 253899500

約数列:

[1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 389, 740, 757, 778, 1514, 1556, 1945, 3028, 3785, 3890, 7570, 7780, 14393, 15140, 28009, 28786, 56018, 57572, 71965, 112036, 140045, 143930, 280090, 287860, 294473, 560180, 588946, 1177892, 1472365, 2944730, 5889460, 10895501, 21791002, 43582004, 54477505, 108955010, 217910020]

約数ペア:

[(1, 217910020), (2, 108955010), (4, 54477505), (5, 43582004), (10, 21791002), (20, 10895501), (37, 5889460), (74, 2944730), (148, 1472365), (185, 1177892), (370, 588946), (389, 560180), (740, 294473), (757, 287860), (778, 280090), (1514, 143930), (1556, 140045), (1945, 112036), (3028, 71965), (3785, 57572), (3890, 56018), (7570, 28786), (7780, 28009), (14393, 15140)]