21103578

素因数分解:

$2^1\times 3^5\times {\mathrm{173}}^1\times {\mathrm{251}}^1$

素因数の和:441

約数の個数: 48

約数和(自身を含む): 47882016

約数和(自身を除く): 26778438

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 81, 162, 173, 243, 251, 346, 486, 502, 519, 753, 1038, 1506, 1557, 2259, 3114, 4518, 4671, 6777, 9342, 13554, 14013, 20331, 28026, 40662, 42039, 43423, 60993, 84078, 86846, 121986, 130269, 260538, 390807, 781614, 1172421, 2344842, 3517263, 7034526, 10551789, 21103578]

約数ペア:

[(1, 21103578), (2, 10551789), (3, 7034526), (6, 3517263), (9, 2344842), (18, 1172421), (27, 781614), (54, 390807), (81, 260538), (162, 130269), (173, 121986), (243, 86846), (251, 84078), (346, 60993), (486, 43423), (502, 42039), (519, 40662), (753, 28026), (1038, 20331), (1506, 14013), (1557, 13554), (2259, 9342), (3114, 6777), (4518, 4671)]