21388312

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{29}}^2$

素因数の和:109

約数の個数: 72

約数和(自身を含む): 48131460

約数和(自身を除く): 26743148

約数列:

[1, 2, 4, 8, 11, 17, 22, 29, 34, 44, 58, 68, 88, 116, 136, 187, 232, 289, 319, 374, 493, 578, 638, 748, 841, 986, 1156, 1276, 1496, 1682, 1972, 2312, 2552, 3179, 3364, 3944, 5423, 6358, 6728, 8381, 9251, 10846, 12716, 14297, 16762, 18502, 21692, 25432, 28594, 33524, 37004, 43384, 57188, 67048, 74008, 92191, 114376, 157267, 184382, 243049, 314534, 368764, 486098, 629068, 737528, 972196, 1258136, 1944392, 2673539, 5347078, 10694156, 21388312]

約数ペア:

[(1, 21388312), (2, 10694156), (4, 5347078), (8, 2673539), (11, 1944392), (17, 1258136), (22, 972196), (29, 737528), (34, 629068), (44, 486098), (58, 368764), (68, 314534), (88, 243049), (116, 184382), (136, 157267), (187, 114376), (232, 92191), (289, 74008), (319, 67048), (374, 57188), (493, 43384), (578, 37004), (638, 33524), (748, 28594), (841, 25432), (986, 21692), (1156, 18502), (1276, 16762), (1496, 14297), (1682, 12716), (1972, 10846), (2312, 9251), (2552, 8381), (3179, 6728), (3364, 6358), (3944, 5423)]