20261384

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{199}}^1$

素因数の和:318

約数の個数: 64

約数和(自身を含む): 45360000

約数和(自身を除く): 25098616

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 89, 104, 143, 178, 199, 286, 356, 398, 572, 712, 796, 979, 1144, 1157, 1592, 1958, 2189, 2314, 2587, 3916, 4378, 4628, 5174, 7832, 8756, 9256, 10348, 12727, 17512, 17711, 20696, 25454, 28457, 35422, 50908, 56914, 70844, 101816, 113828, 141688, 194821, 227656, 230243, 389642, 460486, 779284, 920972, 1558568, 1841944, 2532673, 5065346, 10130692, 20261384]

約数ペア:

[(1, 20261384), (2, 10130692), (4, 5065346), (8, 2532673), (11, 1841944), (13, 1558568), (22, 920972), (26, 779284), (44, 460486), (52, 389642), (88, 230243), (89, 227656), (104, 194821), (143, 141688), (178, 113828), (199, 101816), (286, 70844), (356, 56914), (398, 50908), (572, 35422), (712, 28457), (796, 25454), (979, 20696), (1144, 17711), (1157, 17512), (1592, 12727), (1958, 10348), (2189, 9256), (2314, 8756), (2587, 7832), (3916, 5174), (4378, 4628)]