20861160

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{263}}^1\times {\mathrm{661}}^1$

素因数の和:938

約数の個数: 64

約数和(自身を含む): 62916480

約数和(自身を除く): 42055320

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 263, 526, 661, 789, 1052, 1315, 1322, 1578, 1983, 2104, 2630, 2644, 3156, 3305, 3945, 3966, 5260, 5288, 6312, 6610, 7890, 7932, 9915, 10520, 13220, 15780, 15864, 19830, 26440, 31560, 39660, 79320, 173843, 347686, 521529, 695372, 869215, 1043058, 1390744, 1738430, 2086116, 2607645, 3476860, 4172232, 5215290, 6953720, 10430580, 20861160]

約数ペア:

[(1, 20861160), (2, 10430580), (3, 6953720), (4, 5215290), (5, 4172232), (6, 3476860), (8, 2607645), (10, 2086116), (12, 1738430), (15, 1390744), (20, 1043058), (24, 869215), (30, 695372), (40, 521529), (60, 347686), (120, 173843), (263, 79320), (526, 39660), (661, 31560), (789, 26440), (1052, 19830), (1315, 15864), (1322, 15780), (1578, 13220), (1983, 10520), (2104, 9915), (2630, 7932), (2644, 7890), (3156, 6610), (3305, 6312), (3945, 5288), (3966, 5260)]