81596000

素因数分解:

$2^5\times 5^3\times {\mathrm{20399}}^1$

素因数の和:20424

約数の個数: 48

約数和(自身を含む): 200491200

約数和(自身を除く): 118895200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 125, 160, 200, 250, 400, 500, 800, 1000, 2000, 4000, 20399, 40798, 81596, 101995, 163192, 203990, 326384, 407980, 509975, 652768, 815960, 1019950, 1631920, 2039900, 2549875, 3263840, 4079800, 5099750, 8159600, 10199500, 16319200, 20399000, 40798000, 81596000]

約数ペア:

[(1, 81596000), (2, 40798000), (4, 20399000), (5, 16319200), (8, 10199500), (10, 8159600), (16, 5099750), (20, 4079800), (25, 3263840), (32, 2549875), (40, 2039900), (50, 1631920), (80, 1019950), (100, 815960), (125, 652768), (160, 509975), (200, 407980), (250, 326384), (400, 203990), (500, 163192), (800, 101995), (1000, 81596), (2000, 40798), (4000, 20399)]