21761335.000000000

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{206807}}^1$

素因数の和:206831

約数の個数: 32

約数和(自身を含む): 260578080

約数和(自身を除く): 153038440

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 206807, 413614, 827228, 1034035, 1654456, 2068070, 2688491, 4136140, 5376982, 8272280, 10753964, 13442455, 21507928, 26884910, 53769820, 107539640]

約数ペア:

[(1, 107539640), (2, 53769820), (4, 26884910), (5, 21507928), (8, 13442455), (10, 10753964), (13, 8272280), (20, 5376982), (26, 4136140), (40, 2688491), (52, 2068070), (65, 1654456), (104, 1034035), (130, 827228), (260, 413614), (520, 206807)]