661075.00000000

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2423}}^1$

素因数の和:2494

約数の個数: 48

約数和(自身を含む): 89591040

約数和(自身を除く): 49999220

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 43, 76, 86, 95, 172, 190, 215, 380, 430, 817, 860, 1634, 2423, 3268, 4085, 4846, 8170, 9692, 12115, 16340, 24230, 46037, 48460, 92074, 104189, 184148, 208378, 230185, 416756, 460370, 520945, 920740, 1041890, 1979591, 2083780, 3959182, 7918364, 9897955, 19795910, 39591820]

約数ペア:

[(1, 39591820), (2, 19795910), (4, 9897955), (5, 7918364), (10, 3959182), (19, 2083780), (20, 1979591), (38, 1041890), (43, 920740), (76, 520945), (86, 460370), (95, 416756), (172, 230185), (190, 208378), (215, 184148), (380, 104189), (430, 92074), (817, 48460), (860, 46037), (1634, 24230), (2423, 16340), (3268, 12115), (4085, 9692), (4846, 8170)]