20245424800

素因数分解:

$2^5\times 5^2\times {\mathrm{79}}^1\times {\mathrm{320339}}^1$

素因数の和:320438

約数の個数: 72

約数和(自身を含む): 50049921600

約数和(自身を除く): 29804496800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 79, 80, 100, 158, 160, 200, 316, 395, 400, 632, 790, 800, 1264, 1580, 1975, 2528, 3160, 3950, 6320, 7900, 12640, 15800, 31600, 63200, 320339, 640678, 1281356, 1601695, 2562712, 3203390, 5125424, 6406780, 8008475, 10250848, 12813560, 16016950, 25306781, 25627120, 32033900, 50613562, 51254240, 64067800, 101227124, 126533905, 128135600, 202454248, 253067810, 256271200, 404908496, 506135620, 632669525, 809816992, 1012271240, 1265339050, 2024542480, 2530678100, 4049084960, 5061356200, 10122712400, 20245424800]

約数ペア:

[(1, 20245424800), (2, 10122712400), (4, 5061356200), (5, 4049084960), (8, 2530678100), (10, 2024542480), (16, 1265339050), (20, 1012271240), (25, 809816992), (32, 632669525), (40, 506135620), (50, 404908496), (79, 256271200), (80, 253067810), (100, 202454248), (158, 128135600), (160, 126533905), (200, 101227124), (316, 64067800), (395, 51254240), (400, 50613562), (632, 32033900), (790, 25627120), (800, 25306781), (1264, 16016950), (1580, 12813560), (1975, 10250848), (2528, 8008475), (3160, 6406780), (3950, 5125424), (6320, 3203390), (7900, 2562712), (12640, 1601695), (15800, 1281356), (31600, 640678), (63200, 320339)]