20217828

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1$

素因数の和:217

約数の個数: 96

約数和(自身を含む): 54190080

約数和(自身を除く): 33972252

約数列:

[1, 2, 3, 4, 6, 12, 17, 23, 31, 34, 46, 51, 62, 68, 69, 92, 93, 102, 124, 138, 139, 186, 204, 276, 278, 372, 391, 417, 527, 556, 713, 782, 834, 1054, 1173, 1426, 1564, 1581, 1668, 2108, 2139, 2346, 2363, 2852, 3162, 3197, 4278, 4309, 4692, 4726, 6324, 6394, 7089, 8556, 8618, 9452, 9591, 12121, 12788, 12927, 14178, 17236, 19182, 24242, 25854, 28356, 36363, 38364, 48484, 51708, 54349, 72726, 73253, 99107, 108698, 145452, 146506, 163047, 198214, 217396, 219759, 293012, 297321, 326094, 396428, 439518, 594642, 652188, 879036, 1189284, 1684819, 3369638, 5054457, 6739276, 10108914, 20217828]

約数ペア:

[(1, 20217828), (2, 10108914), (3, 6739276), (4, 5054457), (6, 3369638), (12, 1684819), (17, 1189284), (23, 879036), (31, 652188), (34, 594642), (46, 439518), (51, 396428), (62, 326094), (68, 297321), (69, 293012), (92, 219759), (93, 217396), (102, 198214), (124, 163047), (138, 146506), (139, 145452), (186, 108698), (204, 99107), (276, 73253), (278, 72726), (372, 54349), (391, 51708), (417, 48484), (527, 38364), (556, 36363), (713, 28356), (782, 25854), (834, 24242), (1054, 19182), (1173, 17236), (1426, 14178), (1564, 12927), (1581, 12788), (1668, 12121), (2108, 9591), (2139, 9452), (2346, 8618), (2363, 8556), (2852, 7089), (3162, 6394), (3197, 6324), (4278, 4726), (4309, 4692)]