131665280

素因数分解:

$2^7\times 5^1\times {\mathrm{409}}^1\times {\mathrm{503}}^1$

素因数の和:931

約数の個数: 64

約数和(自身を含む): 316159200

約数和(自身を除く): 184493920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 409, 503, 640, 818, 1006, 1636, 2012, 2045, 2515, 3272, 4024, 4090, 5030, 6544, 8048, 8180, 10060, 13088, 16096, 16360, 20120, 26176, 32192, 32720, 40240, 52352, 64384, 65440, 80480, 130880, 160960, 205727, 261760, 321920, 411454, 822908, 1028635, 1645816, 2057270, 3291632, 4114540, 6583264, 8229080, 13166528, 16458160, 26333056, 32916320, 65832640, 131665280]

約数ペア:

[(1, 131665280), (2, 65832640), (4, 32916320), (5, 26333056), (8, 16458160), (10, 13166528), (16, 8229080), (20, 6583264), (32, 4114540), (40, 3291632), (64, 2057270), (80, 1645816), (128, 1028635), (160, 822908), (320, 411454), (409, 321920), (503, 261760), (640, 205727), (818, 160960), (1006, 130880), (1636, 80480), (2012, 65440), (2045, 64384), (2515, 52352), (3272, 40240), (4024, 32720), (4090, 32192), (5030, 26176), (6544, 20120), (8048, 16360), (8180, 16096), (10060, 13088)]