21537628

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{257}}^1$

素因数の和:382

約数の個数: 48

約数和(自身を含む): 44904384

約数和(自身を除く): 23366756

約数列:

[1, 2, 4, 7, 14, 28, 41, 73, 82, 146, 164, 257, 287, 292, 511, 514, 574, 1022, 1028, 1148, 1799, 2044, 2993, 3598, 5986, 7196, 10537, 11972, 18761, 20951, 21074, 37522, 41902, 42148, 73759, 75044, 83804, 131327, 147518, 262654, 295036, 525308, 769201, 1538402, 3076804, 5384407, 10768814, 21537628]

約数ペア:

[(1, 21537628), (2, 10768814), (4, 5384407), (7, 3076804), (14, 1538402), (28, 769201), (41, 525308), (73, 295036), (82, 262654), (146, 147518), (164, 131327), (257, 83804), (287, 75044), (292, 73759), (511, 42148), (514, 41902), (574, 37522), (1022, 21074), (1028, 20951), (1148, 18761), (1799, 11972), (2044, 10537), (2993, 7196), (3598, 5986)]