21286408

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{809}}^1$

素因数の和:862

約数の個数: 64

約数和(自身を含む): 48988800

約数和(自身を除く): 27702392

約数列:

[1, 2, 4, 8, 11, 13, 22, 23, 26, 44, 46, 52, 88, 92, 104, 143, 184, 253, 286, 299, 506, 572, 598, 809, 1012, 1144, 1196, 1618, 2024, 2392, 3236, 3289, 6472, 6578, 8899, 10517, 13156, 17798, 18607, 21034, 26312, 35596, 37214, 42068, 71192, 74428, 84136, 115687, 148856, 204677, 231374, 241891, 409354, 462748, 483782, 818708, 925496, 967564, 1637416, 1935128, 2660801, 5321602, 10643204, 21286408]

約数ペア:

[(1, 21286408), (2, 10643204), (4, 5321602), (8, 2660801), (11, 1935128), (13, 1637416), (22, 967564), (23, 925496), (26, 818708), (44, 483782), (46, 462748), (52, 409354), (88, 241891), (92, 231374), (104, 204677), (143, 148856), (184, 115687), (253, 84136), (286, 74428), (299, 71192), (506, 42068), (572, 37214), (598, 35596), (809, 26312), (1012, 21034), (1144, 18607), (1196, 17798), (1618, 13156), (2024, 10517), (2392, 8899), (3236, 6578), (3289, 6472)]