18132004

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^2\times {\mathrm{41}}^1$

素因数の和:121

約数の個数: 72

約数和(自身を含む): 39019680

約数和(自身を除く): 20887676

約数列:

[1, 2, 4, 11, 19, 22, 23, 38, 41, 44, 46, 76, 82, 92, 164, 209, 253, 418, 437, 451, 506, 529, 779, 836, 874, 902, 943, 1012, 1058, 1558, 1748, 1804, 1886, 2116, 3116, 3772, 4807, 5819, 8569, 9614, 10051, 10373, 11638, 17138, 17917, 19228, 20102, 20746, 21689, 23276, 34276, 35834, 40204, 41492, 43378, 71668, 86756, 110561, 197087, 221122, 238579, 394174, 412091, 442244, 477158, 788348, 824182, 954316, 1648364, 4533001, 9066002, 18132004]

約数ペア:

[(1, 18132004), (2, 9066002), (4, 4533001), (11, 1648364), (19, 954316), (22, 824182), (23, 788348), (38, 477158), (41, 442244), (44, 412091), (46, 394174), (76, 238579), (82, 221122), (92, 197087), (164, 110561), (209, 86756), (253, 71668), (418, 43378), (437, 41492), (451, 40204), (506, 35834), (529, 34276), (779, 23276), (836, 21689), (874, 20746), (902, 20102), (943, 19228), (1012, 17917), (1058, 17138), (1558, 11638), (1748, 10373), (1804, 10051), (1886, 9614), (2116, 8569), (3116, 5819), (3772, 4807)]