28009492

素因数分解:

$2^2\times 7^1\times {\mathrm{23}}^2\times {\mathrm{31}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 72

約数和(自身を含む): 61440512

約数和(自身を除く): 33431020

約数列:

[1, 2, 4, 7, 14, 23, 28, 31, 46, 61, 62, 92, 122, 124, 161, 217, 244, 322, 427, 434, 529, 644, 713, 854, 868, 1058, 1403, 1426, 1708, 1891, 2116, 2806, 2852, 3703, 3782, 4991, 5612, 7406, 7564, 9821, 9982, 13237, 14812, 16399, 19642, 19964, 26474, 32269, 32798, 39284, 43493, 52948, 64538, 65596, 86986, 114793, 129076, 173972, 225883, 229586, 304451, 451766, 459172, 608902, 903532, 1000339, 1217804, 2000678, 4001356, 7002373, 14004746, 28009492]

約数ペア:

[(1, 28009492), (2, 14004746), (4, 7002373), (7, 4001356), (14, 2000678), (23, 1217804), (28, 1000339), (31, 903532), (46, 608902), (61, 459172), (62, 451766), (92, 304451), (122, 229586), (124, 225883), (161, 173972), (217, 129076), (244, 114793), (322, 86986), (427, 65596), (434, 64538), (529, 52948), (644, 43493), (713, 39284), (854, 32798), (868, 32269), (1058, 26474), (1403, 19964), (1426, 19642), (1708, 16399), (1891, 14812), (2116, 13237), (2806, 9982), (2852, 9821), (3703, 7564), (3782, 7406), (4991, 5612)]