400565565710

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1\times {\mathrm{199}}^1\times {\mathrm{9787}}^1$

素因数の和:10281

約数の個数: 64

約数和(自身を含む): 734898700800

約数和(自身を除く): 334333135090

約数列:

[1, 2, 5, 10, 131, 157, 199, 262, 314, 398, 655, 785, 995, 1310, 1570, 1990, 9787, 19574, 20567, 26069, 31243, 41134, 48935, 52138, 62486, 97870, 102835, 130345, 156215, 205670, 260690, 312430, 1282097, 1536559, 1947613, 2564194, 3073118, 3895226, 4092833, 6410485, 7682795, 8185666, 9738065, 12820970, 15365590, 19476130, 20464165, 40928330, 201289229, 255137303, 305775241, 402578458, 510274606, 611550482, 1006446145, 1275686515, 1528876205, 2012892290, 2551373030, 3057752410, 40056556571, 80113113142, 200282782855, 400565565710]

約数ペア:

[(1, 400565565710), (2, 200282782855), (5, 80113113142), (10, 40056556571), (131, 3057752410), (157, 2551373030), (199, 2012892290), (262, 1528876205), (314, 1275686515), (398, 1006446145), (655, 611550482), (785, 510274606), (995, 402578458), (1310, 305775241), (1570, 255137303), (1990, 201289229), (9787, 40928330), (19574, 20464165), (20567, 19476130), (26069, 15365590), (31243, 12820970), (41134, 9738065), (48935, 8185666), (52138, 7682795), (62486, 6410485), (97870, 4092833), (102835, 3895226), (130345, 3073118), (156215, 2564194), (205670, 1947613), (260690, 1536559), (312430, 1282097)]