81525815

素因数分解:

$5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{2591}}^1$

素因数の和:2663

約数の個数: 32

約数和(自身を含む): 119439360

約数和(自身を除く): 37913545

約数列:

[1, 5, 7, 29, 31, 35, 145, 155, 203, 217, 899, 1015, 1085, 2591, 4495, 6293, 12955, 18137, 31465, 75139, 80321, 90685, 375695, 401605, 525973, 562247, 2329309, 2629865, 2811235, 11646545, 16305163, 81525815]

約数ペア:

[(1, 81525815), (5, 16305163), (7, 11646545), (29, 2811235), (31, 2629865), (35, 2329309), (145, 562247), (155, 525973), (203, 401605), (217, 375695), (899, 90685), (1015, 80321), (1085, 75139), (2591, 31465), (4495, 18137), (6293, 12955)]