19638440

素因数分解:

$2^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{4861}}^1$

素因数の和:4973

約数の個数: 32

約数和(自身を含む): 44633160

約数和(自身を除く): 24994720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 101, 202, 404, 505, 808, 1010, 2020, 4040, 4861, 9722, 19444, 24305, 38888, 48610, 97220, 194440, 490961, 981922, 1963844, 2454805, 3927688, 4909610, 9819220, 19638440]

約数ペア:

[(1, 19638440), (2, 9819220), (4, 4909610), (5, 3927688), (8, 2454805), (10, 1963844), (20, 981922), (40, 490961), (101, 194440), (202, 97220), (404, 48610), (505, 38888), (808, 24305), (1010, 19444), (2020, 9722), (4040, 4861)]