321215320

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{195863}}^1$

素因数の和:195915

約数の個数: 32

約数和(自身を含む): 740365920

約数和(自身を除く): 419150600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 195863, 391726, 783452, 979315, 1566904, 1958630, 3917260, 7834520, 8030383, 16060766, 32121532, 40151915, 64243064, 80303830, 160607660, 321215320]

約数ペア:

[(1, 321215320), (2, 160607660), (4, 80303830), (5, 64243064), (8, 40151915), (10, 32121532), (20, 16060766), (40, 8030383), (41, 7834520), (82, 3917260), (164, 1958630), (205, 1566904), (328, 979315), (410, 783452), (820, 391726), (1640, 195863)]