20438800

素因数分解:

$2^4\times 5^2\times {\mathrm{37}}^1\times {\mathrm{1381}}^1$

素因数の和:1436

約数の個数: 60

約数和(自身を含む): 50467876

約数和(自身を除く): 30029076

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 37, 40, 50, 74, 80, 100, 148, 185, 200, 296, 370, 400, 592, 740, 925, 1381, 1480, 1850, 2762, 2960, 3700, 5524, 6905, 7400, 11048, 13810, 14800, 22096, 27620, 34525, 51097, 55240, 69050, 102194, 110480, 138100, 204388, 255485, 276200, 408776, 510970, 552400, 817552, 1021940, 1277425, 2043880, 2554850, 4087760, 5109700, 10219400, 20438800]

約数ペア:

[(1, 20438800), (2, 10219400), (4, 5109700), (5, 4087760), (8, 2554850), (10, 2043880), (16, 1277425), (20, 1021940), (25, 817552), (37, 552400), (40, 510970), (50, 408776), (74, 276200), (80, 255485), (100, 204388), (148, 138100), (185, 110480), (200, 102194), (296, 69050), (370, 55240), (400, 51097), (592, 34525), (740, 27620), (925, 22096), (1381, 14800), (1480, 13810), (1850, 11048), (2762, 7400), (2960, 6905), (3700, 5524)]