198430640

素因数分解:

$2^4\times 5^1\times {\mathrm{2480383}}^1$

素因数の和:2480396

約数の個数: 20

約数和(自身を含む): 461351424

約数和(自身を除く): 262920784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2480383, 4960766, 9921532, 12401915, 19843064, 24803830, 39686128, 49607660, 99215320, 198430640]

約数ペア:

[(1, 198430640), (2, 99215320), (4, 49607660), (5, 39686128), (8, 24803830), (10, 19843064), (16, 12401915), (20, 9921532), (40, 4960766), (80, 2480383)]