856900

素因数分解:

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

素因数の和:85

約数の個数: 72

約数和(自身を含む): 2187360

約数和(自身を除く): 1330460

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 41, 44, 50, 55, 76, 82, 95, 100, 110, 164, 190, 205, 209, 220, 275, 380, 410, 418, 451, 475, 550, 779, 820, 836, 902, 950, 1025, 1045, 1100, 1558, 1804, 1900, 2050, 2090, 2255, 3116, 3895, 4100, 4180, 4510, 5225, 7790, 8569, 9020, 10450, 11275, 15580, 17138, 19475, 20900, 22550, 34276, 38950, 42845, 45100, 77900, 85690, 171380, 214225, 428450, 856900]

約数ペア:

[(1, 856900), (2, 428450), (4, 214225), (5, 171380), (10, 85690), (11, 77900), (19, 45100), (20, 42845), (22, 38950), (25, 34276), (38, 22550), (41, 20900), (44, 19475), (50, 17138), (55, 15580), (76, 11275), (82, 10450), (95, 9020), (100, 8569), (110, 7790), (164, 5225), (190, 4510), (205, 4180), (209, 4100), (220, 3895), (275, 3116), (380, 2255), (410, 2090), (418, 2050), (451, 1900), (475, 1804), (550, 1558), (779, 1100), (820, 1045), (836, 1025), (902, 950)]