12930520

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 30715200

約数和(自身を除く): 17784680

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 71, 116, 142, 145, 157, 232, 284, 290, 314, 355, 568, 580, 628, 710, 785, 1160, 1256, 1420, 1570, 2059, 2840, 3140, 4118, 4553, 6280, 8236, 9106, 10295, 11147, 16472, 18212, 20590, 22294, 22765, 36424, 41180, 44588, 45530, 55735, 82360, 89176, 91060, 111470, 182120, 222940, 323263, 445880, 646526, 1293052, 1616315, 2586104, 3232630, 6465260, 12930520]

約数ペア:

[(1, 12930520), (2, 6465260), (4, 3232630), (5, 2586104), (8, 1616315), (10, 1293052), (20, 646526), (29, 445880), (40, 323263), (58, 222940), (71, 182120), (116, 111470), (142, 91060), (145, 89176), (157, 82360), (232, 55735), (284, 45530), (290, 44588), (314, 41180), (355, 36424), (568, 22765), (580, 22294), (628, 20590), (710, 18212), (785, 16472), (1160, 11147), (1256, 10295), (1420, 9106), (1570, 8236), (2059, 6280), (2840, 4553), (3140, 4118)]