279821440

素因数分解:

$2^7\times 5^1\times {\mathrm{409}}^1\times {\mathrm{1069}}^1$

素因数の和:1497

約数の個数: 64

約数和(自身を含む): 671211000

約数和(自身を除く): 391389560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 409, 640, 818, 1069, 1636, 2045, 2138, 3272, 4090, 4276, 5345, 6544, 8180, 8552, 10690, 13088, 16360, 17104, 21380, 26176, 32720, 34208, 42760, 52352, 65440, 68416, 85520, 130880, 136832, 171040, 261760, 342080, 437221, 684160, 874442, 1748884, 2186105, 3497768, 4372210, 6995536, 8744420, 13991072, 17488840, 27982144, 34977680, 55964288, 69955360, 139910720, 279821440]

約数ペア:

[(1, 279821440), (2, 139910720), (4, 69955360), (5, 55964288), (8, 34977680), (10, 27982144), (16, 17488840), (20, 13991072), (32, 8744420), (40, 6995536), (64, 4372210), (80, 3497768), (128, 2186105), (160, 1748884), (320, 874442), (409, 684160), (640, 437221), (818, 342080), (1069, 261760), (1636, 171040), (2045, 136832), (2138, 130880), (3272, 85520), (4090, 68416), (4276, 65440), (5345, 52352), (6544, 42760), (8180, 34208), (8552, 32720), (10690, 26176), (13088, 21380), (16360, 17104)]