640699297186

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{2749}}^1\times {\mathrm{389743}}^1$

素因数の和:392530

約数の個数: 32

約数和(自身を含む): 1080370368000

約数和(自身を除く): 439671070814

約数列:

[1, 2, 13, 23, 26, 46, 299, 598, 2749, 5498, 35737, 63227, 71474, 126454, 389743, 779486, 821951, 1643902, 5066659, 8964089, 10133318, 17928178, 116533157, 233066314, 1071403507, 2142807014, 13928245591, 24642280661, 27856491182, 49284561322, 320349648593, 640699297186]

約数ペア:

[(1, 640699297186), (2, 320349648593), (13, 49284561322), (23, 27856491182), (26, 24642280661), (46, 13928245591), (299, 2142807014), (598, 1071403507), (2749, 233066314), (5498, 116533157), (35737, 17928178), (63227, 10133318), (71474, 8964089), (126454, 5066659), (389743, 1643902), (779486, 821951)]