157942420

素因数分解:

$2^2\times 5^1\times {\mathrm{61}}^1\times {\mathrm{129461}}^1$

素因数の和:129531

約数の個数: 24

約数和(自身を含む): 337119048

約数和(自身を除く): 179176628

約数列:

[1, 2, 4, 5, 10, 20, 61, 122, 244, 305, 610, 1220, 129461, 258922, 517844, 647305, 1294610, 2589220, 7897121, 15794242, 31588484, 39485605, 78971210, 157942420]

約数ペア:

[(1, 157942420), (2, 78971210), (4, 39485605), (5, 31588484), (10, 15794242), (20, 7897121), (61, 2589220), (122, 1294610), (244, 647305), (305, 517844), (610, 258922), (1220, 129461)]