21487842

素因数分解:

$2^1\times 3^4\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:189

約数の個数: 80

約数和(自身を含む): 51575040

約数和(自身を除く): 30087198

約数列:

[1, 2, 3, 6, 9, 18, 23, 27, 46, 54, 69, 73, 79, 81, 138, 146, 158, 162, 207, 219, 237, 414, 438, 474, 621, 657, 711, 1242, 1314, 1422, 1679, 1817, 1863, 1971, 2133, 3358, 3634, 3726, 3942, 4266, 5037, 5451, 5767, 5913, 6399, 10074, 10902, 11534, 11826, 12798, 15111, 16353, 17301, 30222, 32706, 34602, 45333, 49059, 51903, 90666, 98118, 103806, 132641, 135999, 147177, 155709, 265282, 271998, 294354, 311418, 397923, 467127, 795846, 934254, 1193769, 2387538, 3581307, 7162614, 10743921, 21487842]

約数ペア:

[(1, 21487842), (2, 10743921), (3, 7162614), (6, 3581307), (9, 2387538), (18, 1193769), (23, 934254), (27, 795846), (46, 467127), (54, 397923), (69, 311418), (73, 294354), (79, 271998), (81, 265282), (138, 155709), (146, 147177), (158, 135999), (162, 132641), (207, 103806), (219, 98118), (237, 90666), (414, 51903), (438, 49059), (474, 45333), (621, 34602), (657, 32706), (711, 30222), (1242, 17301), (1314, 16353), (1422, 15111), (1679, 12798), (1817, 11826), (1863, 11534), (1971, 10902), (2133, 10074), (3358, 6399), (3634, 5913), (3726, 5767), (3942, 5451), (4266, 5037)]