20736980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^3\times {\mathrm{19}}^1\times {\mathrm{41}}^1$

素因数の和:102

約数の個数: 96

約数和(自身を含む): 51649920

約数和(自身を除く): 30912940

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 41, 44, 55, 76, 82, 95, 110, 121, 164, 190, 205, 209, 220, 242, 380, 410, 418, 451, 484, 605, 779, 820, 836, 902, 1045, 1210, 1331, 1558, 1804, 2090, 2255, 2299, 2420, 2662, 3116, 3895, 4180, 4510, 4598, 4961, 5324, 6655, 7790, 8569, 9020, 9196, 9922, 11495, 13310, 15580, 17138, 19844, 22990, 24805, 25289, 26620, 34276, 42845, 45980, 49610, 50578, 54571, 85690, 94259, 99220, 101156, 109142, 126445, 171380, 188518, 218284, 252890, 272855, 377036, 471295, 505780, 545710, 942590, 1036849, 1091420, 1885180, 2073698, 4147396, 5184245, 10368490, 20736980]

約数ペア:

[(1, 20736980), (2, 10368490), (4, 5184245), (5, 4147396), (10, 2073698), (11, 1885180), (19, 1091420), (20, 1036849), (22, 942590), (38, 545710), (41, 505780), (44, 471295), (55, 377036), (76, 272855), (82, 252890), (95, 218284), (110, 188518), (121, 171380), (164, 126445), (190, 109142), (205, 101156), (209, 99220), (220, 94259), (242, 85690), (380, 54571), (410, 50578), (418, 49610), (451, 45980), (484, 42845), (605, 34276), (779, 26620), (820, 25289), (836, 24805), (902, 22990), (1045, 19844), (1210, 17138), (1331, 15580), (1558, 13310), (1804, 11495), (2090, 9922), (2255, 9196), (2299, 9020), (2420, 8569), (2662, 7790), (3116, 6655), (3895, 5324), (4180, 4961), (4510, 4598)]