21589685

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{191}}^1$

素因数の和:293

約数の個数: 32

約数和(自身を含む): 29417472

約数和(自身を除く): 7827787

約数列:

[1, 5, 13, 37, 47, 65, 185, 191, 235, 481, 611, 955, 1739, 2405, 2483, 3055, 7067, 8695, 8977, 12415, 22607, 35335, 44885, 91871, 113035, 116701, 332149, 459355, 583505, 1660745, 4317937, 21589685]

約数ペア:

[(1, 21589685), (5, 4317937), (13, 1660745), (37, 583505), (47, 459355), (65, 332149), (185, 116701), (191, 113035), (235, 91871), (481, 44885), (611, 35335), (955, 22607), (1739, 12415), (2405, 8977), (2483, 8695), (3055, 7067)]