21453388

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:127

約数の個数: 96

約数和(自身を含む): 47900160

約数和(自身を除く): 26446772

約数列:

[1, 2, 4, 11, 17, 22, 23, 29, 34, 43, 44, 46, 58, 68, 86, 92, 116, 172, 187, 253, 319, 374, 391, 473, 493, 506, 638, 667, 731, 748, 782, 946, 986, 989, 1012, 1247, 1276, 1334, 1462, 1564, 1892, 1972, 1978, 2494, 2668, 2924, 3956, 4301, 4988, 5423, 7337, 8041, 8602, 10846, 10879, 11339, 13717, 14674, 16082, 16813, 17204, 21199, 21692, 21758, 22678, 27434, 28681, 29348, 32164, 33626, 42398, 43516, 45356, 54868, 57362, 67252, 84796, 114724, 124729, 184943, 233189, 249458, 315491, 369886, 466378, 487577, 498916, 630982, 739772, 932756, 975154, 1261964, 1950308, 5363347, 10726694, 21453388]

約数ペア:

[(1, 21453388), (2, 10726694), (4, 5363347), (11, 1950308), (17, 1261964), (22, 975154), (23, 932756), (29, 739772), (34, 630982), (43, 498916), (44, 487577), (46, 466378), (58, 369886), (68, 315491), (86, 249458), (92, 233189), (116, 184943), (172, 124729), (187, 114724), (253, 84796), (319, 67252), (374, 57362), (391, 54868), (473, 45356), (493, 43516), (506, 42398), (638, 33626), (667, 32164), (731, 29348), (748, 28681), (782, 27434), (946, 22678), (986, 21758), (989, 21692), (1012, 21199), (1247, 17204), (1276, 16813), (1334, 16082), (1462, 14674), (1564, 13717), (1892, 11339), (1972, 10879), (1978, 10846), (2494, 8602), (2668, 8041), (2924, 7337), (3956, 5423), (4301, 4988)]