28720208

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{331}}^1$

素因数の和:396

約数の個数: 80

約数和(自身を含む): 66692160

約数和(自身を除く): 37971952

約数列:

[1, 2, 4, 8, 11, 16, 17, 22, 29, 34, 44, 58, 68, 88, 116, 136, 176, 187, 232, 272, 319, 331, 374, 464, 493, 638, 662, 748, 986, 1276, 1324, 1496, 1972, 2552, 2648, 2992, 3641, 3944, 5104, 5296, 5423, 5627, 7282, 7888, 9599, 10846, 11254, 14564, 19198, 21692, 22508, 29128, 38396, 43384, 45016, 58256, 61897, 76792, 86768, 90032, 105589, 123794, 153584, 163183, 211178, 247588, 326366, 422356, 495176, 652732, 844712, 990352, 1305464, 1689424, 1795013, 2610928, 3590026, 7180052, 14360104, 28720208]

約数ペア:

[(1, 28720208), (2, 14360104), (4, 7180052), (8, 3590026), (11, 2610928), (16, 1795013), (17, 1689424), (22, 1305464), (29, 990352), (34, 844712), (44, 652732), (58, 495176), (68, 422356), (88, 326366), (116, 247588), (136, 211178), (176, 163183), (187, 153584), (232, 123794), (272, 105589), (319, 90032), (331, 86768), (374, 76792), (464, 61897), (493, 58256), (638, 45016), (662, 43384), (748, 38396), (986, 29128), (1276, 22508), (1324, 21692), (1496, 19198), (1972, 14564), (2552, 11254), (2648, 10846), (2992, 9599), (3641, 7888), (3944, 7282), (5104, 5627), (5296, 5423)]