20689504

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1109}}^1$

素因数の和:1183

約数の個数: 48

約数和(自身を含む): 45314640

約数和(自身を除く): 24625136

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 53, 88, 106, 176, 212, 352, 424, 583, 848, 1109, 1166, 1696, 2218, 2332, 4436, 4664, 8872, 9328, 12199, 17744, 18656, 24398, 35488, 48796, 58777, 97592, 117554, 195184, 235108, 390368, 470216, 646547, 940432, 1293094, 1880864, 2586188, 5172376, 10344752, 20689504]

約数ペア:

[(1, 20689504), (2, 10344752), (4, 5172376), (8, 2586188), (11, 1880864), (16, 1293094), (22, 940432), (32, 646547), (44, 470216), (53, 390368), (88, 235108), (106, 195184), (176, 117554), (212, 97592), (352, 58777), (424, 48796), (583, 35488), (848, 24398), (1109, 18656), (1166, 17744), (1696, 12199), (2218, 9328), (2332, 8872), (4436, 4664)]