81163520

素因数分解:

$2^8\times 5^1\times {\mathrm{63409}}^1$

素因数の和:63430

約数の個数: 36

約数和(自身を含む): 194415060

約数和(自身を除く): 113251540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 63409, 126818, 253636, 317045, 507272, 634090, 1014544, 1268180, 2029088, 2536360, 4058176, 5072720, 8116352, 10145440, 16232704, 20290880, 40581760, 81163520]

約数ペア:

[(1, 81163520), (2, 40581760), (4, 20290880), (5, 16232704), (8, 10145440), (10, 8116352), (16, 5072720), (20, 4058176), (32, 2536360), (40, 2029088), (64, 1268180), (80, 1014544), (128, 634090), (160, 507272), (256, 317045), (320, 253636), (640, 126818), (1280, 63409)]