18219404

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1489}}^1$

素因数の和:1542

約数の個数: 48

約数和(自身を含む): 40051200

約数和(自身を除く): 21831796

約数列:

[1, 2, 4, 7, 14, 19, 23, 28, 38, 46, 76, 92, 133, 161, 266, 322, 437, 532, 644, 874, 1489, 1748, 2978, 3059, 5956, 6118, 10423, 12236, 20846, 28291, 34247, 41692, 56582, 68494, 113164, 136988, 198037, 239729, 396074, 479458, 650693, 792148, 958916, 1301386, 2602772, 4554851, 9109702, 18219404]

約数ペア:

[(1, 18219404), (2, 9109702), (4, 4554851), (7, 2602772), (14, 1301386), (19, 958916), (23, 792148), (28, 650693), (38, 479458), (46, 396074), (76, 239729), (92, 198037), (133, 136988), (161, 113164), (266, 68494), (322, 56582), (437, 41692), (532, 34247), (644, 28291), (874, 20846), (1489, 12236), (1748, 10423), (2978, 6118), (3059, 5956)]