20453600

素因数分解:

$2^5\times 5^2\times {\mathrm{37}}^1\times {\mathrm{691}}^1$

素因数の和:748

約数の個数: 72

約数和(自身を含む): 51356088

約数和(自身を除く): 30902488

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 37, 40, 50, 74, 80, 100, 148, 160, 185, 200, 296, 370, 400, 592, 691, 740, 800, 925, 1184, 1382, 1480, 1850, 2764, 2960, 3455, 3700, 5528, 5920, 6910, 7400, 11056, 13820, 14800, 17275, 22112, 25567, 27640, 29600, 34550, 51134, 55280, 69100, 102268, 110560, 127835, 138200, 204536, 255670, 276400, 409072, 511340, 552800, 639175, 818144, 1022680, 1278350, 2045360, 2556700, 4090720, 5113400, 10226800, 20453600]

約数ペア:

[(1, 20453600), (2, 10226800), (4, 5113400), (5, 4090720), (8, 2556700), (10, 2045360), (16, 1278350), (20, 1022680), (25, 818144), (32, 639175), (37, 552800), (40, 511340), (50, 409072), (74, 276400), (80, 255670), (100, 204536), (148, 138200), (160, 127835), (185, 110560), (200, 102268), (296, 69100), (370, 55280), (400, 51134), (592, 34550), (691, 29600), (740, 27640), (800, 25567), (925, 22112), (1184, 17275), (1382, 14800), (1480, 13820), (1850, 11056), (2764, 7400), (2960, 6910), (3455, 5920), (3700, 5528)]