381782020

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{331}}^1\times {\mathrm{571}}^1$

素因数の和:1012

約数の個数: 48

約数和(自身を含む): 813548736

約数和(自身を除く): 431766716

約数列:

[1, 2, 4, 5, 10, 20, 101, 202, 331, 404, 505, 571, 662, 1010, 1142, 1324, 1655, 2020, 2284, 2855, 3310, 5710, 6620, 11420, 33431, 57671, 66862, 115342, 133724, 167155, 189001, 230684, 288355, 334310, 378002, 576710, 668620, 756004, 945005, 1153420, 1890010, 3780020, 19089101, 38178202, 76356404, 95445505, 190891010, 381782020]

約数ペア:

[(1, 381782020), (2, 190891010), (4, 95445505), (5, 76356404), (10, 38178202), (20, 19089101), (101, 3780020), (202, 1890010), (331, 1153420), (404, 945005), (505, 756004), (571, 668620), (662, 576710), (1010, 378002), (1142, 334310), (1324, 288355), (1655, 230684), (2020, 189001), (2284, 167155), (2855, 133724), (3310, 115342), (5710, 66862), (6620, 57671), (11420, 33431)]