21235465

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{8059}}^1$

素因数の和:8112

約数の個数: 16

約数和(自身を含む): 27855360

約数和(自身を除く): 6619895

約数列:

[1, 5, 17, 31, 85, 155, 527, 2635, 8059, 40295, 137003, 249829, 685015, 1249145, 4247093, 21235465]

約数ペア:

[(1, 21235465), (5, 4247093), (17, 1249145), (31, 685015), (85, 249829), (155, 137003), (527, 40295), (2635, 8059)]