201871990

素因数分解:

$2^1\times 5^1\times {\mathrm{947}}^1\times {\mathrm{21317}}^1$

素因数の和:22271

約数の個数: 16

約数和(自身を含む): 363770352

約数和(自身を除く): 161898362

約数列:

[1, 2, 5, 10, 947, 1894, 4735, 9470, 21317, 42634, 106585, 213170, 20187199, 40374398, 100935995, 201871990]

約数ペア:

[(1, 201871990), (2, 100935995), (5, 40374398), (10, 20187199), (947, 213170), (1894, 106585), (4735, 42634), (9470, 21317)]