21239946

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{12967}}^1$

素因数の和:12995

約数の個数: 48

約数和(自身を含む): 56644224

約数和(自身を除く): 35404278

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 39, 42, 63, 78, 91, 117, 126, 182, 234, 273, 546, 819, 1638, 12967, 25934, 38901, 77802, 90769, 116703, 168571, 181538, 233406, 272307, 337142, 505713, 544614, 816921, 1011426, 1179997, 1517139, 1633842, 2359994, 3034278, 3539991, 7079982, 10619973, 21239946]

約数ペア:

[(1, 21239946), (2, 10619973), (3, 7079982), (6, 3539991), (7, 3034278), (9, 2359994), (13, 1633842), (14, 1517139), (18, 1179997), (21, 1011426), (26, 816921), (39, 544614), (42, 505713), (63, 337142), (78, 272307), (91, 233406), (117, 181538), (126, 168571), (182, 116703), (234, 90769), (273, 77802), (546, 38901), (819, 25934), (1638, 12967)]