28173964

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{157}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 66890880

約数和(自身を除く): 38716916

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 29, 34, 52, 58, 68, 91, 116, 119, 157, 182, 203, 221, 238, 314, 364, 377, 406, 442, 476, 493, 628, 754, 812, 884, 986, 1099, 1508, 1547, 1972, 2041, 2198, 2639, 2669, 3094, 3451, 4082, 4396, 4553, 5278, 5338, 6188, 6409, 6902, 8164, 9106, 10556, 10676, 12818, 13804, 14287, 18212, 18683, 25636, 28574, 31871, 34697, 37366, 44863, 57148, 59189, 63742, 69394, 74732, 77401, 89726, 118378, 127484, 138788, 154802, 179452, 236756, 242879, 309604, 414323, 485758, 541807, 828646, 971516, 1006213, 1083614, 1657292, 2012426, 2167228, 4024852, 7043491, 14086982, 28173964]

約数ペア:

[(1, 28173964), (2, 14086982), (4, 7043491), (7, 4024852), (13, 2167228), (14, 2012426), (17, 1657292), (26, 1083614), (28, 1006213), (29, 971516), (34, 828646), (52, 541807), (58, 485758), (68, 414323), (91, 309604), (116, 242879), (119, 236756), (157, 179452), (182, 154802), (203, 138788), (221, 127484), (238, 118378), (314, 89726), (364, 77401), (377, 74732), (406, 69394), (442, 63742), (476, 59189), (493, 57148), (628, 44863), (754, 37366), (812, 34697), (884, 31871), (986, 28574), (1099, 25636), (1508, 18683), (1547, 18212), (1972, 14287), (2041, 13804), (2198, 12818), (2639, 10676), (2669, 10556), (3094, 9106), (3451, 8164), (4082, 6902), (4396, 6409), (4553, 6188), (5278, 5338)]