198591320

素因数分解:

$2^3\times 5^1\times {\mathrm{1123}}^1\times {\mathrm{4421}}^1$

素因数の和:5555

約数の個数: 32

約数和(自身を含む): 447329520

約数和(自身を除く): 248738200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1123, 2246, 4421, 4492, 5615, 8842, 8984, 11230, 17684, 22105, 22460, 35368, 44210, 44920, 88420, 176840, 4964783, 9929566, 19859132, 24823915, 39718264, 49647830, 99295660, 198591320]

約数ペア:

[(1, 198591320), (2, 99295660), (4, 49647830), (5, 39718264), (8, 24823915), (10, 19859132), (20, 9929566), (40, 4964783), (1123, 176840), (2246, 88420), (4421, 44920), (4492, 44210), (5615, 35368), (8842, 22460), (8984, 22105), (11230, 17684)]