28109718

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{131}}^2$

素因数の和:290

約数の個数: 72

約数和(自身を含む): 75535824

約数和(自身を除く): 47426106

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 131, 182, 234, 262, 273, 393, 546, 786, 819, 917, 1179, 1638, 1703, 1834, 2358, 2751, 3406, 5109, 5502, 8253, 10218, 11921, 15327, 16506, 17161, 23842, 30654, 34322, 35763, 51483, 71526, 102966, 107289, 120127, 154449, 214578, 223093, 240254, 308898, 360381, 446186, 669279, 720762, 1081143, 1338558, 1561651, 2007837, 2162286, 3123302, 4015674, 4684953, 9369906, 14054859, 28109718]

約数ペア:

[(1, 28109718), (2, 14054859), (3, 9369906), (6, 4684953), (7, 4015674), (9, 3123302), (13, 2162286), (14, 2007837), (18, 1561651), (21, 1338558), (26, 1081143), (39, 720762), (42, 669279), (63, 446186), (78, 360381), (91, 308898), (117, 240254), (126, 223093), (131, 214578), (182, 154449), (234, 120127), (262, 107289), (273, 102966), (393, 71526), (546, 51483), (786, 35763), (819, 34322), (917, 30654), (1179, 23842), (1638, 17161), (1703, 16506), (1834, 15327), (2358, 11921), (2751, 10218), (3406, 8253), (5109, 5502)]