21713968

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{853}}^1$

素因数の和:941

約数の個数: 40

約数和(自身を含む): 44264528

約数和(自身を除く): 22550560

約数列:

[1, 2, 4, 8, 16, 37, 43, 74, 86, 148, 172, 296, 344, 592, 688, 853, 1591, 1706, 3182, 3412, 6364, 6824, 12728, 13648, 25456, 31561, 36679, 63122, 73358, 126244, 146716, 252488, 293432, 504976, 586864, 1357123, 2714246, 5428492, 10856984, 21713968]

約数ペア:

[(1, 21713968), (2, 10856984), (4, 5428492), (8, 2714246), (16, 1357123), (37, 586864), (43, 504976), (74, 293432), (86, 252488), (148, 146716), (172, 126244), (296, 73358), (344, 63122), (592, 36679), (688, 31561), (853, 25456), (1591, 13648), (1706, 12728), (3182, 6824), (3412, 6364)]