19997490825

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{184777}}^1$

素因数の和:184843

約数の個数: 72

約数和(自身を含む): 39615664088

約数和(自身を除く): 19618173263

約数列:

[1, 3, 5, 9, 13, 15, 25, 37, 39, 45, 65, 75, 111, 117, 185, 195, 225, 325, 333, 481, 555, 585, 925, 975, 1443, 1665, 2405, 2775, 2925, 4329, 7215, 8325, 12025, 21645, 36075, 108225, 184777, 554331, 923885, 1662993, 2402101, 2771655, 4619425, 6836749, 7206303, 8314965, 12010505, 13858275, 20510247, 21618909, 34183745, 36031515, 41574825, 60052525, 61530741, 88877737, 102551235, 108094545, 170918725, 180157575, 266633211, 307653705, 444388685, 512756175, 540472725, 799899633, 1333166055, 1538268525, 2221943425, 3999498165, 6665830275, 19997490825]

約数ペア:

[(1, 19997490825), (3, 6665830275), (5, 3999498165), (9, 2221943425), (13, 1538268525), (15, 1333166055), (25, 799899633), (37, 540472725), (39, 512756175), (45, 444388685), (65, 307653705), (75, 266633211), (111, 180157575), (117, 170918725), (185, 108094545), (195, 102551235), (225, 88877737), (325, 61530741), (333, 60052525), (481, 41574825), (555, 36031515), (585, 34183745), (925, 21618909), (975, 20510247), (1443, 13858275), (1665, 12010505), (2405, 8314965), (2775, 7206303), (2925, 6836749), (4329, 4619425), (7215, 2771655), (8325, 2402101), (12025, 1662993), (21645, 923885), (36075, 554331), (108225, 184777)]