20885104

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1$

素因数の和:182

約数の個数: 80

約数和(自身を含む): 46425600

約数和(自身を除く): 25540496

約数列:

[1, 2, 4, 8, 16, 19, 23, 29, 38, 46, 58, 76, 92, 103, 116, 152, 184, 206, 232, 304, 368, 412, 437, 464, 551, 667, 824, 874, 1102, 1334, 1648, 1748, 1957, 2204, 2369, 2668, 2987, 3496, 3914, 4408, 4738, 5336, 5974, 6992, 7828, 8816, 9476, 10672, 11948, 12673, 15656, 18952, 23896, 25346, 31312, 37904, 45011, 47792, 50692, 56753, 68701, 90022, 101384, 113506, 137402, 180044, 202768, 227012, 274804, 360088, 454024, 549608, 720176, 908048, 1099216, 1305319, 2610638, 5221276, 10442552, 20885104]

約数ペア:

[(1, 20885104), (2, 10442552), (4, 5221276), (8, 2610638), (16, 1305319), (19, 1099216), (23, 908048), (29, 720176), (38, 549608), (46, 454024), (58, 360088), (76, 274804), (92, 227012), (103, 202768), (116, 180044), (152, 137402), (184, 113506), (206, 101384), (232, 90022), (304, 68701), (368, 56753), (412, 50692), (437, 47792), (464, 45011), (551, 37904), (667, 31312), (824, 25346), (874, 23896), (1102, 18952), (1334, 15656), (1648, 12673), (1748, 11948), (1957, 10672), (2204, 9476), (2369, 8816), (2668, 7828), (2987, 6992), (3496, 5974), (3914, 5336), (4408, 4738)]