21779615

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{83}}^1\times {\mathrm{367}}^1$

素因数の和:479

約数の個数: 32

約数和(自身を含む): 31159296

約数和(自身を除く): 9379681

約数列:

[1, 5, 11, 13, 55, 65, 83, 143, 367, 415, 715, 913, 1079, 1835, 4037, 4565, 4771, 5395, 11869, 20185, 23855, 30461, 52481, 59345, 152305, 262405, 335071, 395993, 1675355, 1979965, 4355923, 21779615]

約数ペア:

[(1, 21779615), (5, 4355923), (11, 1979965), (13, 1675355), (55, 395993), (65, 335071), (83, 262405), (143, 152305), (367, 59345), (415, 52481), (715, 30461), (913, 23855), (1079, 20185), (1835, 11869), (4037, 5395), (4565, 4771)]