28008320

素因数分解:

$2^7\times 5^1\times {\mathrm{107}}^1\times {\mathrm{409}}^1$

素因数の和:535

約数の個数: 64

約数和(自身を含む): 67748400

約数和(自身を除く): 39740080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 107, 128, 160, 214, 320, 409, 428, 535, 640, 818, 856, 1070, 1636, 1712, 2045, 2140, 3272, 3424, 4090, 4280, 6544, 6848, 8180, 8560, 13088, 13696, 16360, 17120, 26176, 32720, 34240, 43763, 52352, 65440, 68480, 87526, 130880, 175052, 218815, 261760, 350104, 437630, 700208, 875260, 1400416, 1750520, 2800832, 3501040, 5601664, 7002080, 14004160, 28008320]

約数ペア:

[(1, 28008320), (2, 14004160), (4, 7002080), (5, 5601664), (8, 3501040), (10, 2800832), (16, 1750520), (20, 1400416), (32, 875260), (40, 700208), (64, 437630), (80, 350104), (107, 261760), (128, 218815), (160, 175052), (214, 130880), (320, 87526), (409, 68480), (428, 65440), (535, 52352), (640, 43763), (818, 34240), (856, 32720), (1070, 26176), (1636, 17120), (1712, 16360), (2045, 13696), (2140, 13088), (3272, 8560), (3424, 8180), (4090, 6848), (4280, 6544)]