21498928

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1$

素因数の和:202

約数の個数: 80

約数和(自身を含む): 48854016

約数和(自身を除く): 27355088

約数列:

[1, 2, 4, 8, 11, 16, 22, 23, 44, 46, 47, 88, 92, 94, 113, 176, 184, 188, 226, 253, 368, 376, 452, 506, 517, 752, 904, 1012, 1034, 1081, 1243, 1808, 2024, 2068, 2162, 2486, 2599, 4048, 4136, 4324, 4972, 5198, 5311, 8272, 8648, 9944, 10396, 10622, 11891, 17296, 19888, 20792, 21244, 23782, 28589, 41584, 42488, 47564, 57178, 58421, 84976, 95128, 114356, 116842, 122153, 190256, 228712, 233684, 244306, 457424, 467368, 488612, 934736, 977224, 1343683, 1954448, 2687366, 5374732, 10749464, 21498928]

約数ペア:

[(1, 21498928), (2, 10749464), (4, 5374732), (8, 2687366), (11, 1954448), (16, 1343683), (22, 977224), (23, 934736), (44, 488612), (46, 467368), (47, 457424), (88, 244306), (92, 233684), (94, 228712), (113, 190256), (176, 122153), (184, 116842), (188, 114356), (226, 95128), (253, 84976), (368, 58421), (376, 57178), (452, 47564), (506, 42488), (517, 41584), (752, 28589), (904, 23782), (1012, 21244), (1034, 20792), (1081, 19888), (1243, 17296), (1808, 11891), (2024, 10622), (2068, 10396), (2162, 9944), (2486, 8648), (2599, 8272), (4048, 5311), (4136, 5198), (4324, 4972)]