207221391

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{97}}^1$

素因数の和:197

約数の個数: 72

約数和(自身を含む): 354222960

約数和(自身を除く): 147001569

約数列:

[1, 3, 9, 13, 19, 31, 39, 57, 93, 97, 117, 171, 247, 279, 291, 403, 589, 741, 873, 961, 1209, 1261, 1767, 1843, 2223, 2883, 3007, 3627, 3783, 5301, 5529, 7657, 8649, 9021, 11349, 12493, 16587, 18259, 22971, 23959, 27063, 37479, 39091, 54777, 57133, 68913, 71877, 93217, 112437, 117273, 164331, 171399, 215631, 237367, 279651, 351819, 514197, 712101, 742729, 838953, 1211821, 1771123, 2136303, 2228187, 3635463, 5313369, 6684561, 10906389, 15940107, 23024599, 69073797, 207221391]

約数ペア:

[(1, 207221391), (3, 69073797), (9, 23024599), (13, 15940107), (19, 10906389), (31, 6684561), (39, 5313369), (57, 3635463), (93, 2228187), (97, 2136303), (117, 1771123), (171, 1211821), (247, 838953), (279, 742729), (291, 712101), (403, 514197), (589, 351819), (741, 279651), (873, 237367), (961, 215631), (1209, 171399), (1261, 164331), (1767, 117273), (1843, 112437), (2223, 93217), (2883, 71877), (3007, 68913), (3627, 57133), (3783, 54777), (5301, 39091), (5529, 37479), (7657, 27063), (8649, 23959), (9021, 22971), (11349, 18259), (12493, 16587)]