28165878

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:278

約数の個数: 72

約数和(自身を含む): 67830048

約数和(自身を除く): 39664170

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 47, 78, 94, 117, 141, 169, 197, 234, 282, 338, 394, 423, 507, 591, 611, 846, 1014, 1182, 1222, 1521, 1773, 1833, 2561, 3042, 3546, 3666, 5122, 5499, 7683, 7943, 9259, 10998, 15366, 15886, 18518, 23049, 23829, 27777, 33293, 46098, 47658, 55554, 66586, 71487, 83331, 99879, 120367, 142974, 166662, 199758, 240734, 299637, 361101, 599274, 722202, 1083303, 1564771, 2166606, 3129542, 4694313, 9388626, 14082939, 28165878]

約数ペア:

[(1, 28165878), (2, 14082939), (3, 9388626), (6, 4694313), (9, 3129542), (13, 2166606), (18, 1564771), (26, 1083303), (39, 722202), (47, 599274), (78, 361101), (94, 299637), (117, 240734), (141, 199758), (169, 166662), (197, 142974), (234, 120367), (282, 99879), (338, 83331), (394, 71487), (423, 66586), (507, 55554), (591, 47658), (611, 46098), (846, 33293), (1014, 27777), (1182, 23829), (1222, 23049), (1521, 18518), (1773, 15886), (1833, 15366), (2561, 10998), (3042, 9259), (3546, 7943), (3666, 7683), (5122, 5499)]