21006258

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{487}}^1$

素因数の和:591

約数の個数: 64

約数和(自身を含む): 52469760

約数和(自身を除く): 31463502

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 78, 79, 91, 158, 182, 237, 273, 474, 487, 546, 553, 974, 1027, 1106, 1461, 1659, 2054, 2922, 3081, 3318, 3409, 6162, 6331, 6818, 7189, 10227, 12662, 14378, 18993, 20454, 21567, 37986, 38473, 43134, 44317, 76946, 88634, 115419, 132951, 230838, 265902, 269311, 500149, 538622, 807933, 1000298, 1500447, 1615866, 3000894, 3501043, 7002086, 10503129, 21006258]

約数ペア:

[(1, 21006258), (2, 10503129), (3, 7002086), (6, 3501043), (7, 3000894), (13, 1615866), (14, 1500447), (21, 1000298), (26, 807933), (39, 538622), (42, 500149), (78, 269311), (79, 265902), (91, 230838), (158, 132951), (182, 115419), (237, 88634), (273, 76946), (474, 44317), (487, 43134), (546, 38473), (553, 37986), (974, 21567), (1027, 20454), (1106, 18993), (1461, 14378), (1659, 12662), (2054, 10227), (2922, 7189), (3081, 6818), (3318, 6331), (3409, 6162)]