20474576500

素因数分解:

$2^2\times 5^3\times 7^2\times {\mathrm{809}}^1\times {\mathrm{1033}}^1$

素因数の和:1875

約数の個数: 144

約数和(自身を含む): 52131839760

約数和(自身を除く): 31657263260

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 125, 140, 175, 196, 245, 250, 350, 490, 500, 700, 809, 875, 980, 1033, 1225, 1618, 1750, 2066, 2450, 3236, 3500, 4045, 4132, 4900, 5165, 5663, 6125, 7231, 8090, 10330, 11326, 12250, 14462, 16180, 20225, 20660, 22652, 24500, 25825, 28315, 28924, 36155, 39641, 40450, 50617, 51650, 56630, 72310, 79282, 80900, 101125, 101234, 103300, 113260, 129125, 141575, 144620, 158564, 180775, 198205, 202250, 202468, 253085, 258250, 283150, 361550, 396410, 404500, 506170, 516500, 566300, 707875, 723100, 792820, 835697, 903875, 991025, 1012340, 1265425, 1415750, 1671394, 1807750, 1982050, 2530850, 2831500, 3342788, 3615500, 3964100, 4178485, 4955125, 5061700, 5849879, 6327125, 8356970, 9910250, 11699758, 12654250, 16713940, 19820500, 20892425, 23399516, 25308500, 29249395, 40949153, 41784850, 58498790, 81898306, 83569700, 104462125, 116997580, 146246975, 163796612, 204745765, 208924250, 292493950, 409491530, 417848500, 584987900, 731234875, 818983060, 1023728825, 1462469750, 2047457650, 2924939500, 4094915300, 5118644125, 10237288250, 20474576500]

約数ペア:

[(1, 20474576500), (2, 10237288250), (4, 5118644125), (5, 4094915300), (7, 2924939500), (10, 2047457650), (14, 1462469750), (20, 1023728825), (25, 818983060), (28, 731234875), (35, 584987900), (49, 417848500), (50, 409491530), (70, 292493950), (98, 208924250), (100, 204745765), (125, 163796612), (140, 146246975), (175, 116997580), (196, 104462125), (245, 83569700), (250, 81898306), (350, 58498790), (490, 41784850), (500, 40949153), (700, 29249395), (809, 25308500), (875, 23399516), (980, 20892425), (1033, 19820500), (1225, 16713940), (1618, 12654250), (1750, 11699758), (2066, 9910250), (2450, 8356970), (3236, 6327125), (3500, 5849879), (4045, 5061700), (4132, 4955125), (4900, 4178485), (5165, 3964100), (5663, 3615500), (6125, 3342788), (7231, 2831500), (8090, 2530850), (10330, 1982050), (11326, 1807750), (12250, 1671394), (14462, 1415750), (16180, 1265425), (20225, 1012340), (20660, 991025), (22652, 903875), (24500, 835697), (25825, 792820), (28315, 723100), (28924, 707875), (36155, 566300), (39641, 516500), (40450, 506170), (50617, 404500), (51650, 396410), (56630, 361550), (72310, 283150), (79282, 258250), (80900, 253085), (101125, 202468), (101234, 202250), (103300, 198205), (113260, 180775), (129125, 158564), (141575, 144620)]