278375130020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1997}}^1\times {\mathrm{536141}}^1$

素因数の和:538160

約数の個数: 48

約数和(自身を含む): 629872489008

約数和(自身を除く): 351497358988

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 1997, 3994, 7988, 9985, 19970, 25961, 39940, 51922, 103844, 129805, 259610, 519220, 536141, 1072282, 2144564, 2680705, 5361410, 6969833, 10722820, 13939666, 27879332, 34849165, 69698330, 139396660, 1070673577, 2141347154, 4282694308, 5353367885, 10706735770, 13918756501, 21413471540, 27837513002, 55675026004, 69593782505, 139187565010, 278375130020]

約数ペア:

[(1, 278375130020), (2, 139187565010), (4, 69593782505), (5, 55675026004), (10, 27837513002), (13, 21413471540), (20, 13918756501), (26, 10706735770), (52, 5353367885), (65, 4282694308), (130, 2141347154), (260, 1070673577), (1997, 139396660), (3994, 69698330), (7988, 34849165), (9985, 27879332), (19970, 13939666), (25961, 10722820), (39940, 6969833), (51922, 5361410), (103844, 2680705), (129805, 2144564), (259610, 1072282), (519220, 536141)]