163977980

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{431521}}^1$

素因数の和:431549

約数の個数: 24

約数和(自身を含む): 362478480

約数和(自身を除く): 198500500

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 380, 431521, 863042, 1726084, 2157605, 4315210, 8198899, 8630420, 16397798, 32795596, 40994495, 81988990, 163977980]

約数ペア:

[(1, 163977980), (2, 81988990), (4, 40994495), (5, 32795596), (10, 16397798), (19, 8630420), (20, 8198899), (38, 4315210), (76, 2157605), (95, 1726084), (190, 863042), (380, 431521)]