18628820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{19009}}^1$

素因数の和:19032

約数の個数: 36

約数和(自身を含む): 45509940

約数和(自身を除く): 26881120

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 19009, 38018, 76036, 95045, 133063, 190090, 266126, 380180, 532252, 665315, 931441, 1330630, 1862882, 2661260, 3725764, 4657205, 9314410, 18628820]

約数ペア:

[(1, 18628820), (2, 9314410), (4, 4657205), (5, 3725764), (7, 2661260), (10, 1862882), (14, 1330630), (20, 931441), (28, 665315), (35, 532252), (49, 380180), (70, 266126), (98, 190090), (140, 133063), (196, 95045), (245, 76036), (490, 38018), (980, 19009)]