18728680

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{1297}}^1$

素因数の和:1346

約数の個数: 48

約数和(自身を含む): 44508420

約数和(自身を除く): 25779740

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 361, 380, 722, 760, 1297, 1444, 1805, 2594, 2888, 3610, 5188, 6485, 7220, 10376, 12970, 14440, 24643, 25940, 49286, 51880, 98572, 123215, 197144, 246430, 468217, 492860, 936434, 985720, 1872868, 2341085, 3745736, 4682170, 9364340, 18728680]

約数ペア:

[(1, 18728680), (2, 9364340), (4, 4682170), (5, 3745736), (8, 2341085), (10, 1872868), (19, 985720), (20, 936434), (38, 492860), (40, 468217), (76, 246430), (95, 197144), (152, 123215), (190, 98572), (361, 51880), (380, 49286), (722, 25940), (760, 24643), (1297, 14440), (1444, 12970), (1805, 10376), (2594, 7220), (2888, 6485), (3610, 5188)]