13378660

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^2\times {\mathrm{109}}^1$

素因数の和:173

約数の個数: 72

約数和(自身を含む): 31683960

約数和(自身を除く): 18305300

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 34, 38, 68, 76, 85, 95, 109, 170, 190, 218, 323, 340, 361, 380, 436, 545, 646, 722, 1090, 1292, 1444, 1615, 1805, 1853, 2071, 2180, 3230, 3610, 3706, 4142, 6137, 6460, 7220, 7412, 8284, 9265, 10355, 12274, 18530, 20710, 24548, 30685, 35207, 37060, 39349, 41420, 61370, 70414, 78698, 122740, 140828, 157396, 176035, 196745, 352070, 393490, 668933, 704140, 786980, 1337866, 2675732, 3344665, 6689330, 13378660]

約数ペア:

[(1, 13378660), (2, 6689330), (4, 3344665), (5, 2675732), (10, 1337866), (17, 786980), (19, 704140), (20, 668933), (34, 393490), (38, 352070), (68, 196745), (76, 176035), (85, 157396), (95, 140828), (109, 122740), (170, 78698), (190, 70414), (218, 61370), (323, 41420), (340, 39349), (361, 37060), (380, 35207), (436, 30685), (545, 24548), (646, 20710), (722, 18530), (1090, 12274), (1292, 10355), (1444, 9265), (1615, 8284), (1805, 7412), (1853, 7220), (2071, 6460), (2180, 6137), (3230, 4142), (3610, 3706)]