21662775

素因数分解:

$3^3\times 5^2\times {\mathrm{67}}^1\times {\mathrm{479}}^1$

素因数の和:565

約数の個数: 48

約数和(自身を含む): 40473600

約数和(自身を除く): 18810825

約数列:

[1, 3, 5, 9, 15, 25, 27, 45, 67, 75, 135, 201, 225, 335, 479, 603, 675, 1005, 1437, 1675, 1809, 2395, 3015, 4311, 5025, 7185, 9045, 11975, 12933, 15075, 21555, 32093, 35925, 45225, 64665, 96279, 107775, 160465, 288837, 323325, 481395, 802325, 866511, 1444185, 2406975, 4332555, 7220925, 21662775]

約数ペア:

[(1, 21662775), (3, 7220925), (5, 4332555), (9, 2406975), (15, 1444185), (25, 866511), (27, 802325), (45, 481395), (67, 323325), (75, 288837), (135, 160465), (201, 107775), (225, 96279), (335, 64665), (479, 45225), (603, 35925), (675, 32093), (1005, 21555), (1437, 15075), (1675, 12933), (1809, 11975), (2395, 9045), (3015, 7185), (4311, 5025)]