28804700

素因数分解:

$2^2\times 5^2\times {\mathrm{71}}^1\times {\mathrm{4057}}^1$

素因数の和:4142

約数の個数: 36

約数和(自身を含む): 63402192

約数和(自身を除く): 34597492

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 71, 100, 142, 284, 355, 710, 1420, 1775, 3550, 4057, 7100, 8114, 16228, 20285, 40570, 81140, 101425, 202850, 288047, 405700, 576094, 1152188, 1440235, 2880470, 5760940, 7201175, 14402350, 28804700]

約数ペア:

[(1, 28804700), (2, 14402350), (4, 7201175), (5, 5760940), (10, 2880470), (20, 1440235), (25, 1152188), (50, 576094), (71, 405700), (100, 288047), (142, 202850), (284, 101425), (355, 81140), (710, 40570), (1420, 20285), (1775, 16228), (3550, 8114), (4057, 7100)]