19091020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{727}}^1$

素因数の和:850

約数の個数: 48

約数和(自身を含む): 43662528

約数和(自身を除く): 24571508

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 727, 1010, 1313, 1454, 2020, 2626, 2908, 3635, 5252, 6565, 7270, 9451, 13130, 14540, 18902, 26260, 37804, 47255, 73427, 94510, 146854, 189020, 293708, 367135, 734270, 954551, 1468540, 1909102, 3818204, 4772755, 9545510, 19091020]

約数ペア:

[(1, 19091020), (2, 9545510), (4, 4772755), (5, 3818204), (10, 1909102), (13, 1468540), (20, 954551), (26, 734270), (52, 367135), (65, 293708), (101, 189020), (130, 146854), (202, 94510), (260, 73427), (404, 47255), (505, 37804), (727, 26260), (1010, 18902), (1313, 14540), (1454, 13130), (2020, 9451), (2626, 7270), (2908, 6565), (3635, 5252)]