19909600

素因数分解:

$2^5\times 5^2\times {\mathrm{41}}^1\times {\mathrm{607}}^1$

素因数の和:668

約数の個数: 72

約数和(自身を含む): 49871808

約数和(自身を除く): 29962208

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 41, 50, 80, 82, 100, 160, 164, 200, 205, 328, 400, 410, 607, 656, 800, 820, 1025, 1214, 1312, 1640, 2050, 2428, 3035, 3280, 4100, 4856, 6070, 6560, 8200, 9712, 12140, 15175, 16400, 19424, 24280, 24887, 30350, 32800, 48560, 49774, 60700, 97120, 99548, 121400, 124435, 199096, 242800, 248870, 398192, 485600, 497740, 622175, 796384, 995480, 1244350, 1990960, 2488700, 3981920, 4977400, 9954800, 19909600]

約数ペア:

[(1, 19909600), (2, 9954800), (4, 4977400), (5, 3981920), (8, 2488700), (10, 1990960), (16, 1244350), (20, 995480), (25, 796384), (32, 622175), (40, 497740), (41, 485600), (50, 398192), (80, 248870), (82, 242800), (100, 199096), (160, 124435), (164, 121400), (200, 99548), (205, 97120), (328, 60700), (400, 49774), (410, 48560), (607, 32800), (656, 30350), (800, 24887), (820, 24280), (1025, 19424), (1214, 16400), (1312, 15175), (1640, 12140), (2050, 9712), (2428, 8200), (3035, 6560), (3280, 6070), (4100, 4856)]