17939545

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{307}}^1$

素因数の和:385

約数の個数: 32

約数和(自身を含む): 24837120

約数和(自身を除く): 6897575

約数列:

[1, 5, 13, 29, 31, 65, 145, 155, 307, 377, 403, 899, 1535, 1885, 2015, 3991, 4495, 8903, 9517, 11687, 19955, 44515, 47585, 58435, 115739, 123721, 275993, 578695, 618605, 1379965, 3587909, 17939545]

約数ペア:

[(1, 17939545), (5, 3587909), (13, 1379965), (29, 618605), (31, 578695), (65, 275993), (145, 123721), (155, 115739), (307, 58435), (377, 47585), (403, 44515), (899, 19955), (1535, 11687), (1885, 9517), (2015, 8903), (3991, 4495)]