128216320

素因数分解:

$2^8\times 5^1\times {\mathrm{100169}}^1$

素因数の和:100190

約数の個数: 36

約数和(自身を含む): 307121220

約数和(自身を除く): 178904900

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 100169, 200338, 400676, 500845, 801352, 1001690, 1602704, 2003380, 3205408, 4006760, 6410816, 8013520, 12821632, 16027040, 25643264, 32054080, 64108160, 128216320]

約数ペア:

[(1, 128216320), (2, 64108160), (4, 32054080), (5, 25643264), (8, 16027040), (10, 12821632), (16, 8013520), (20, 6410816), (32, 4006760), (40, 3205408), (64, 2003380), (80, 1602704), (128, 1001690), (160, 801352), (256, 500845), (320, 400676), (640, 200338), (1280, 100169)]