251159320

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{60961}}^1$

素因数の和:61075

約数の個数: 32

約数和(自身を含む): 570604320

約数和(自身を除く): 319445000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 60961, 121922, 243844, 304805, 487688, 609610, 1219220, 2438440, 6278983, 12557966, 25115932, 31394915, 50231864, 62789830, 125579660, 251159320]

約数ペア:

[(1, 251159320), (2, 125579660), (4, 62789830), (5, 50231864), (8, 31394915), (10, 25115932), (20, 12557966), (40, 6278983), (103, 2438440), (206, 1219220), (412, 609610), (515, 487688), (824, 304805), (1030, 243844), (2060, 121922), (4120, 60961)]