400525600

素因数分解:

$2^5\times 5^2\times {\mathrm{101}}^1\times {\mathrm{4957}}^1$

素因数の和:5078

約数の個数: 72

約数和(自身を含む): 987663348

約数和(自身を除く): 587137748

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 100, 101, 160, 200, 202, 400, 404, 505, 800, 808, 1010, 1616, 2020, 2525, 3232, 4040, 4957, 5050, 8080, 9914, 10100, 16160, 19828, 20200, 24785, 39656, 40400, 49570, 79312, 80800, 99140, 123925, 158624, 198280, 247850, 396560, 495700, 500657, 793120, 991400, 1001314, 1982800, 2002628, 2503285, 3965600, 4005256, 5006570, 8010512, 10013140, 12516425, 16021024, 20026280, 25032850, 40052560, 50065700, 80105120, 100131400, 200262800, 400525600]

約数ペア:

[(1, 400525600), (2, 200262800), (4, 100131400), (5, 80105120), (8, 50065700), (10, 40052560), (16, 25032850), (20, 20026280), (25, 16021024), (32, 12516425), (40, 10013140), (50, 8010512), (80, 5006570), (100, 4005256), (101, 3965600), (160, 2503285), (200, 2002628), (202, 1982800), (400, 1001314), (404, 991400), (505, 793120), (800, 500657), (808, 495700), (1010, 396560), (1616, 247850), (2020, 198280), (2525, 158624), (3232, 123925), (4040, 99140), (4957, 80800), (5050, 79312), (8080, 49570), (9914, 40400), (10100, 39656), (16160, 24785), (19828, 20200)]