18835405

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1$

素因数の和:225

約数の個数: 32

約数和(自身を含む): 25264224

約数和(自身を除く): 6428819

約数列:

[1, 5, 17, 37, 53, 85, 113, 185, 265, 565, 629, 901, 1921, 1961, 3145, 4181, 4505, 5989, 9605, 9805, 20905, 29945, 33337, 71077, 101813, 166685, 221593, 355385, 509065, 1107965, 3767081, 18835405]

約数ペア:

[(1, 18835405), (5, 3767081), (17, 1107965), (37, 509065), (53, 355385), (85, 221593), (113, 166685), (185, 101813), (265, 71077), (565, 33337), (629, 29945), (901, 20905), (1921, 9805), (1961, 9605), (3145, 5989), (4181, 4505)]