1239139120

素因数分解:

$2^4\times 5^1\times {\mathrm{409}}^1\times {\mathrm{37871}}^1$

素因数の和:38293

約数の個数: 40

約数和(自身を含む): 2888118720

約数和(自身を除く): 1648979600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 409, 818, 1636, 2045, 3272, 4090, 6544, 8180, 16360, 32720, 37871, 75742, 151484, 189355, 302968, 378710, 605936, 757420, 1514840, 3029680, 15489239, 30978478, 61956956, 77446195, 123913912, 154892390, 247827824, 309784780, 619569560, 1239139120]

約数ペア:

[(1, 1239139120), (2, 619569560), (4, 309784780), (5, 247827824), (8, 154892390), (10, 123913912), (16, 77446195), (20, 61956956), (40, 30978478), (80, 15489239), (409, 3029680), (818, 1514840), (1636, 757420), (2045, 605936), (3272, 378710), (4090, 302968), (6544, 189355), (8180, 151484), (16360, 75742), (32720, 37871)]