90205505

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{503}}^1$

素因数の和:641

約数の個数: 32

約数和(自身を含む): 121927680

約数和(自身を除く): 31722175

約数列:

[1, 5, 13, 31, 65, 89, 155, 403, 445, 503, 1157, 2015, 2515, 2759, 5785, 6539, 13795, 15593, 32695, 35867, 44767, 77965, 179335, 202709, 223835, 581971, 1013545, 1387777, 2909855, 6938885, 18041101, 90205505]

約数ペア:

[(1, 90205505), (5, 18041101), (13, 6938885), (31, 2909855), (65, 1387777), (89, 1013545), (155, 581971), (403, 223835), (445, 202709), (503, 179335), (1157, 77965), (2015, 44767), (2515, 35867), (2759, 32695), (5785, 15593), (6539, 13795)]