1640648919

素因数分解:

$3^1\times 7^5\times {\mathrm{13}}^1\times {\mathrm{2503}}^1$

素因数の和:2554

約数の個数: 48

約数和(自身を含む): 2749512192

約数和(自身を除く): 1108863273

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 343, 637, 1029, 1911, 2401, 2503, 4459, 7203, 7509, 13377, 16807, 17521, 31213, 32539, 50421, 52563, 93639, 97617, 122647, 218491, 227773, 367941, 655473, 683319, 858529, 1594411, 2575587, 4783233, 6009703, 11160877, 18029109, 33482631, 42067921, 78126139, 126203763, 234378417, 546882973, 1640648919]

約数ペア:

[(1, 1640648919), (3, 546882973), (7, 234378417), (13, 126203763), (21, 78126139), (39, 42067921), (49, 33482631), (91, 18029109), (147, 11160877), (273, 6009703), (343, 4783233), (637, 2575587), (1029, 1594411), (1911, 858529), (2401, 683319), (2503, 655473), (4459, 367941), (7203, 227773), (7509, 218491), (13377, 122647), (16807, 97617), (17521, 93639), (31213, 52563), (32539, 50421)]