21409614

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{139}}^1\times {\mathrm{199}}^1$

素因数の和:389

約数の個数: 48

約数和(自身を含む): 48048000

約数和(自身を除く): 26638386

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 139, 199, 258, 278, 387, 398, 417, 597, 774, 834, 1194, 1251, 1791, 2502, 3582, 5977, 8557, 11954, 17114, 17931, 25671, 27661, 35862, 51342, 53793, 55322, 77013, 82983, 107586, 154026, 165966, 248949, 497898, 1189423, 2378846, 3568269, 7136538, 10704807, 21409614]

約数ペア:

[(1, 21409614), (2, 10704807), (3, 7136538), (6, 3568269), (9, 2378846), (18, 1189423), (43, 497898), (86, 248949), (129, 165966), (139, 154026), (199, 107586), (258, 82983), (278, 77013), (387, 55322), (398, 53793), (417, 51342), (597, 35862), (774, 27661), (834, 25671), (1194, 17931), (1251, 17114), (1791, 11954), (2502, 8557), (3582, 5977)]