21000024

素因数分解:

$2^3\times 3^2\times {\mathrm{263}}^1\times {\mathrm{1109}}^1$

素因数の和:1384

約数の個数: 48

約数和(自身を含む): 57142800

約数和(自身を除く): 36142776

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 263, 526, 789, 1052, 1109, 1578, 2104, 2218, 2367, 3156, 3327, 4436, 4734, 6312, 6654, 8872, 9468, 9981, 13308, 18936, 19962, 26616, 39924, 79848, 291667, 583334, 875001, 1166668, 1750002, 2333336, 2625003, 3500004, 5250006, 7000008, 10500012, 21000024]

約数ペア:

[(1, 21000024), (2, 10500012), (3, 7000008), (4, 5250006), (6, 3500004), (8, 2625003), (9, 2333336), (12, 1750002), (18, 1166668), (24, 875001), (36, 583334), (72, 291667), (263, 79848), (526, 39924), (789, 26616), (1052, 19962), (1109, 18936), (1578, 13308), (2104, 9981), (2218, 9468), (2367, 8872), (3156, 6654), (3327, 6312), (4436, 4734)]