20249440

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{6661}}^1$

素因数の和:6695

約数の個数: 48

約数和(自身を含む): 50364720

約数和(自身を除く): 30115280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 80, 95, 152, 160, 190, 304, 380, 608, 760, 1520, 3040, 6661, 13322, 26644, 33305, 53288, 66610, 106576, 126559, 133220, 213152, 253118, 266440, 506236, 532880, 632795, 1012472, 1065760, 1265590, 2024944, 2531180, 4049888, 5062360, 10124720, 20249440]

約数ペア:

[(1, 20249440), (2, 10124720), (4, 5062360), (5, 4049888), (8, 2531180), (10, 2024944), (16, 1265590), (19, 1065760), (20, 1012472), (32, 632795), (38, 532880), (40, 506236), (76, 266440), (80, 253118), (95, 213152), (152, 133220), (160, 126559), (190, 106576), (304, 66610), (380, 53288), (608, 33305), (760, 26644), (1520, 13322), (3040, 6661)]