20287128

素因数分解:

$2^3\times 3^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{389}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 53071200

約数和(自身を除く): 32784072

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 41, 53, 82, 106, 123, 159, 164, 212, 246, 318, 328, 389, 424, 492, 636, 778, 984, 1167, 1272, 1556, 2173, 2334, 3112, 4346, 4668, 6519, 8692, 9336, 13038, 15949, 17384, 20617, 26076, 31898, 41234, 47847, 52152, 61851, 63796, 82468, 95694, 123702, 127592, 164936, 191388, 247404, 382776, 494808, 845297, 1690594, 2535891, 3381188, 5071782, 6762376, 10143564, 20287128]

約数ペア:

[(1, 20287128), (2, 10143564), (3, 6762376), (4, 5071782), (6, 3381188), (8, 2535891), (12, 1690594), (24, 845297), (41, 494808), (53, 382776), (82, 247404), (106, 191388), (123, 164936), (159, 127592), (164, 123702), (212, 95694), (246, 82468), (318, 63796), (328, 61851), (389, 52152), (424, 47847), (492, 41234), (636, 31898), (778, 26076), (984, 20617), (1167, 17384), (1272, 15949), (1556, 13038), (2173, 9336), (2334, 8692), (3112, 6519), (4346, 4668)]