80378090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{199}}^1\times {\mathrm{239}}^1$

素因数の和:471

約数の個数: 48

約数和(自身を含む): 158112000

約数和(自身を除く): 77733910

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 169, 199, 239, 338, 398, 478, 845, 995, 1195, 1690, 1990, 2390, 2587, 3107, 5174, 6214, 12935, 15535, 25870, 31070, 33631, 40391, 47561, 67262, 80782, 95122, 168155, 201955, 237805, 336310, 403910, 475610, 618293, 1236586, 3091465, 6182930, 8037809, 16075618, 40189045, 80378090]

約数ペア:

[(1, 80378090), (2, 40189045), (5, 16075618), (10, 8037809), (13, 6182930), (26, 3091465), (65, 1236586), (130, 618293), (169, 475610), (199, 403910), (239, 336310), (338, 237805), (398, 201955), (478, 168155), (845, 95122), (995, 80782), (1195, 67262), (1690, 47561), (1990, 40391), (2390, 33631), (2587, 31070), (3107, 25870), (5174, 15535), (6214, 12935)]