20803848

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{509}}^1$

素因数の和:662

約数の個数: 64

約数和(自身を含む): 56548800

約数和(自身を除く): 35744952

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 131, 156, 262, 312, 393, 509, 524, 786, 1018, 1048, 1527, 1572, 1703, 2036, 3054, 3144, 3406, 4072, 5109, 6108, 6617, 6812, 10218, 12216, 13234, 13624, 19851, 20436, 26468, 39702, 40872, 52936, 66679, 79404, 133358, 158808, 200037, 266716, 400074, 533432, 800148, 866827, 1600296, 1733654, 2600481, 3467308, 5200962, 6934616, 10401924, 20803848]

約数ペア:

[(1, 20803848), (2, 10401924), (3, 6934616), (4, 5200962), (6, 3467308), (8, 2600481), (12, 1733654), (13, 1600296), (24, 866827), (26, 800148), (39, 533432), (52, 400074), (78, 266716), (104, 200037), (131, 158808), (156, 133358), (262, 79404), (312, 66679), (393, 52936), (509, 40872), (524, 39702), (786, 26468), (1018, 20436), (1048, 19851), (1527, 13624), (1572, 13234), (1703, 12216), (2036, 10218), (3054, 6812), (3144, 6617), (3406, 6108), (4072, 5109)]