21728156724

素因数分解:

$2^2\times 3^2\times {\mathrm{19}}^1\times {\mathrm{3541}}^1\times {\mathrm{8971}}^1$

素因数の和:12541

約数の個数: 72

約数和(自身を含む): 57837459680

約数和(自身を除く): 36109302956

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684, 3541, 7082, 8971, 10623, 14164, 17942, 21246, 26913, 31869, 35884, 42492, 53826, 63738, 67279, 80739, 107652, 127476, 134558, 161478, 170449, 201837, 269116, 322956, 340898, 403674, 511347, 605511, 681796, 807348, 1022694, 1211022, 1534041, 2045388, 2422044, 3068082, 6136164, 31766311, 63532622, 95298933, 127065244, 190597866, 285896799, 381195732, 571793598, 603559909, 1143587196, 1207119818, 1810679727, 2414239636, 3621359454, 5432039181, 7242718908, 10864078362, 21728156724]

約数ペア:

[(1, 21728156724), (2, 10864078362), (3, 7242718908), (4, 5432039181), (6, 3621359454), (9, 2414239636), (12, 1810679727), (18, 1207119818), (19, 1143587196), (36, 603559909), (38, 571793598), (57, 381195732), (76, 285896799), (114, 190597866), (171, 127065244), (228, 95298933), (342, 63532622), (684, 31766311), (3541, 6136164), (7082, 3068082), (8971, 2422044), (10623, 2045388), (14164, 1534041), (17942, 1211022), (21246, 1022694), (26913, 807348), (31869, 681796), (35884, 605511), (42492, 511347), (53826, 403674), (63738, 340898), (67279, 322956), (80739, 269116), (107652, 201837), (127476, 170449), (134558, 161478)]