205372280

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{97}}^1\times {\mathrm{1291}}^1$

素因数の和:1440

約数の個数: 64

約数和(自身を含む): 478608480

約数和(自身を除く): 273236200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 97, 164, 194, 205, 328, 388, 410, 485, 776, 820, 970, 1291, 1640, 1940, 2582, 3880, 3977, 5164, 6455, 7954, 10328, 12910, 15908, 19885, 25820, 31816, 39770, 51640, 52931, 79540, 105862, 125227, 159080, 211724, 250454, 264655, 423448, 500908, 529310, 626135, 1001816, 1058620, 1252270, 2117240, 2504540, 5009080, 5134307, 10268614, 20537228, 25671535, 41074456, 51343070, 102686140, 205372280]

約数ペア:

[(1, 205372280), (2, 102686140), (4, 51343070), (5, 41074456), (8, 25671535), (10, 20537228), (20, 10268614), (40, 5134307), (41, 5009080), (82, 2504540), (97, 2117240), (164, 1252270), (194, 1058620), (205, 1001816), (328, 626135), (388, 529310), (410, 500908), (485, 423448), (776, 264655), (820, 250454), (970, 211724), (1291, 159080), (1640, 125227), (1940, 105862), (2582, 79540), (3880, 52931), (3977, 51640), (5164, 39770), (6455, 31816), (7954, 25820), (10328, 19885), (12910, 15908)]