20153925

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{479}}^1$

素因数の和:523

約数の個数: 72

約数和(自身を含む): 41783040

約数和(自身を除く): 21629115

約数列:

[1, 3, 5, 9, 11, 15, 17, 25, 33, 45, 51, 55, 75, 85, 99, 153, 165, 187, 225, 255, 275, 425, 479, 495, 561, 765, 825, 935, 1275, 1437, 1683, 2395, 2475, 2805, 3825, 4311, 4675, 5269, 7185, 8143, 8415, 11975, 14025, 15807, 21555, 24429, 26345, 35925, 40715, 42075, 47421, 73287, 79035, 89573, 107775, 122145, 131725, 203575, 237105, 268719, 366435, 395175, 447865, 610725, 806157, 1185525, 1343595, 1832175, 2239325, 4030785, 6717975, 20153925]

約数ペア:

[(1, 20153925), (3, 6717975), (5, 4030785), (9, 2239325), (11, 1832175), (15, 1343595), (17, 1185525), (25, 806157), (33, 610725), (45, 447865), (51, 395175), (55, 366435), (75, 268719), (85, 237105), (99, 203575), (153, 131725), (165, 122145), (187, 107775), (225, 89573), (255, 79035), (275, 73287), (425, 47421), (479, 42075), (495, 40715), (561, 35925), (765, 26345), (825, 24429), (935, 21555), (1275, 15807), (1437, 14025), (1683, 11975), (2395, 8415), (2475, 8143), (2805, 7185), (3825, 5269), (4311, 4675)]