289023620

素因数分解:

$2^2\times 5^1\times {\mathrm{101}}^1\times {\mathrm{199}}^1\times {\mathrm{719}}^1$

素因数の和:1028

約数の個数: 48

約数和(自身を含む): 616896000

約数和(自身を除く): 327872380

約数列:

[1, 2, 4, 5, 10, 20, 101, 199, 202, 398, 404, 505, 719, 796, 995, 1010, 1438, 1990, 2020, 2876, 3595, 3980, 7190, 14380, 20099, 40198, 72619, 80396, 100495, 143081, 145238, 200990, 286162, 290476, 363095, 401980, 572324, 715405, 726190, 1430810, 1452380, 2861620, 14451181, 28902362, 57804724, 72255905, 144511810, 289023620]

約数ペア:

[(1, 289023620), (2, 144511810), (4, 72255905), (5, 57804724), (10, 28902362), (20, 14451181), (101, 2861620), (199, 1452380), (202, 1430810), (398, 726190), (404, 715405), (505, 572324), (719, 401980), (796, 363095), (995, 290476), (1010, 286162), (1438, 200990), (1990, 145238), (2020, 143081), (2876, 100495), (3595, 80396), (3980, 72619), (7190, 40198), (14380, 20099)]