21054812

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{233}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 41277600

約数和(自身を除く): 20222788

約数列:

[1, 2, 4, 19, 29, 38, 41, 58, 76, 82, 116, 164, 233, 466, 551, 779, 932, 1102, 1189, 1558, 2204, 2378, 3116, 4427, 4756, 6757, 8854, 9553, 13514, 17708, 19106, 22591, 27028, 38212, 45182, 90364, 128383, 181507, 256766, 277037, 363014, 513532, 554074, 726028, 1108148, 5263703, 10527406, 21054812]

約数ペア:

[(1, 21054812), (2, 10527406), (4, 5263703), (19, 1108148), (29, 726028), (38, 554074), (41, 513532), (58, 363014), (76, 277037), (82, 256766), (116, 181507), (164, 128383), (233, 90364), (466, 45182), (551, 38212), (779, 27028), (932, 22591), (1102, 19106), (1189, 17708), (1558, 13514), (2204, 9553), (2378, 8854), (3116, 6757), (4427, 4756)]