204550480

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{28729}}^1$

素因数の和:28831

約数の個数: 40

約数和(自身を含む): 480940200

約数和(自身を除く): 276389720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120, 28729, 57458, 114916, 143645, 229832, 287290, 459664, 574580, 1149160, 2298320, 2556881, 5113762, 10227524, 12784405, 20455048, 25568810, 40910096, 51137620, 102275240, 204550480]

約数ペア:

[(1, 204550480), (2, 102275240), (4, 51137620), (5, 40910096), (8, 25568810), (10, 20455048), (16, 12784405), (20, 10227524), (40, 5113762), (80, 2556881), (89, 2298320), (178, 1149160), (356, 574580), (445, 459664), (712, 287290), (890, 229832), (1424, 143645), (1780, 114916), (3560, 57458), (7120, 28729)]