20974685

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:245

約数の個数: 32

約数和(自身を含む): 28200960

約数和(自身を除く): 7226275

約数列:

[1, 5, 17, 29, 67, 85, 127, 145, 335, 493, 635, 1139, 1943, 2159, 2465, 3683, 5695, 8509, 9715, 10795, 18415, 33031, 42545, 62611, 144653, 165155, 246761, 313055, 723265, 1233805, 4194937, 20974685]

約数ペア:

[(1, 20974685), (5, 4194937), (17, 1233805), (29, 723265), (67, 313055), (85, 246761), (127, 165155), (145, 144653), (335, 62611), (493, 42545), (635, 33031), (1139, 18415), (1943, 10795), (2159, 9715), (2465, 8509), (3683, 5695)]