204143920

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{109}}^1\times {\mathrm{571}}^1$

素因数の和:734

約数の個数: 80

約数和(自身を含む): 491531040

約数和(自身を除く): 287387120

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 109, 164, 205, 218, 328, 410, 436, 545, 571, 656, 820, 872, 1090, 1142, 1640, 1744, 2180, 2284, 2855, 3280, 4360, 4469, 4568, 5710, 8720, 8938, 9136, 11420, 17876, 22345, 22840, 23411, 35752, 44690, 45680, 46822, 62239, 71504, 89380, 93644, 117055, 124478, 178760, 187288, 234110, 248956, 311195, 357520, 374576, 468220, 497912, 622390, 936440, 995824, 1244780, 1872880, 2489560, 2551799, 4979120, 5103598, 10207196, 12758995, 20414392, 25517990, 40828784, 51035980, 102071960, 204143920]

約数ペア:

[(1, 204143920), (2, 102071960), (4, 51035980), (5, 40828784), (8, 25517990), (10, 20414392), (16, 12758995), (20, 10207196), (40, 5103598), (41, 4979120), (80, 2551799), (82, 2489560), (109, 1872880), (164, 1244780), (205, 995824), (218, 936440), (328, 622390), (410, 497912), (436, 468220), (545, 374576), (571, 357520), (656, 311195), (820, 248956), (872, 234110), (1090, 187288), (1142, 178760), (1640, 124478), (1744, 117055), (2180, 93644), (2284, 89380), (2855, 71504), (3280, 62239), (4360, 46822), (4469, 45680), (4568, 44690), (5710, 35752), (8720, 23411), (8938, 22840), (9136, 22345), (11420, 17876)]