28107405

素因数分解:

$3^4\times 5^1\times {\mathrm{69401}}^1$

素因数の和:69418

約数の個数: 20

約数和(自身を含む): 50385852

約数和(自身を除く): 22278447

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 69401, 208203, 347005, 624609, 1041015, 1873827, 3123045, 5621481, 9369135, 28107405]

約数ペア:

[(1, 28107405), (3, 9369135), (5, 5621481), (9, 3123045), (15, 1873827), (27, 1041015), (45, 624609), (81, 347005), (135, 208203), (405, 69401)]