20981896160

素因数分解:

$2^5\times 5^1\times {\mathrm{31}}^1\times {\mathrm{4230221}}^1$

素因数の和:4230267

約数の個数: 48

約数和(自身を含む): 51168765312

約数和(自身を除く): 30186869152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 80, 124, 155, 160, 248, 310, 496, 620, 992, 1240, 2480, 4960, 4230221, 8460442, 16920884, 21151105, 33841768, 42302210, 67683536, 84604420, 131136851, 135367072, 169208840, 262273702, 338417680, 524547404, 655684255, 676835360, 1049094808, 1311368510, 2098189616, 2622737020, 4196379232, 5245474040, 10490948080, 20981896160]

約数ペア:

[(1, 20981896160), (2, 10490948080), (4, 5245474040), (5, 4196379232), (8, 2622737020), (10, 2098189616), (16, 1311368510), (20, 1049094808), (31, 676835360), (32, 655684255), (40, 524547404), (62, 338417680), (80, 262273702), (124, 169208840), (155, 135367072), (160, 131136851), (248, 84604420), (310, 67683536), (496, 42302210), (620, 33841768), (992, 21151105), (1240, 16920884), (2480, 8460442), (4960, 4230221)]