19477780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^2\times {\mathrm{263}}^1$

素因数の和:325

約数の個数: 72

約数和(自身を含む): 49053312

約数和(自身を除く): 29575532

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 263, 322, 460, 526, 529, 644, 805, 1052, 1058, 1315, 1610, 1841, 2116, 2630, 2645, 3220, 3682, 3703, 5260, 5290, 6049, 7364, 7406, 9205, 10580, 12098, 14812, 18410, 18515, 24196, 30245, 36820, 37030, 42343, 60490, 74060, 84686, 120980, 139127, 169372, 211715, 278254, 423430, 556508, 695635, 846860, 973889, 1391270, 1947778, 2782540, 3895556, 4869445, 9738890, 19477780]

約数ペア:

[(1, 19477780), (2, 9738890), (4, 4869445), (5, 3895556), (7, 2782540), (10, 1947778), (14, 1391270), (20, 973889), (23, 846860), (28, 695635), (35, 556508), (46, 423430), (70, 278254), (92, 211715), (115, 169372), (140, 139127), (161, 120980), (230, 84686), (263, 74060), (322, 60490), (460, 42343), (526, 37030), (529, 36820), (644, 30245), (805, 24196), (1052, 18515), (1058, 18410), (1315, 14812), (1610, 12098), (1841, 10580), (2116, 9205), (2630, 7406), (2645, 7364), (3220, 6049), (3682, 5290), (3703, 5260)]