128439260

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{221447}}^1$

素因数の和:221485

約数の個数: 24

約数和(自身を含む): 279024480

約数和(自身を除く): 150585220

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 221447, 442894, 885788, 1107235, 2214470, 4428940, 6421963, 12843926, 25687852, 32109815, 64219630, 128439260]

約数ペア:

[(1, 128439260), (2, 64219630), (4, 32109815), (5, 25687852), (10, 12843926), (20, 6421963), (29, 4428940), (58, 2214470), (116, 1107235), (145, 885788), (290, 442894), (580, 221447)]