28443709

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{139}}^1$

素因数の和:241

約数の個数: 32

約数和(自身を含む): 36126720

約数和(自身を除く): 7683011

約数列:

[1, 7, 23, 31, 41, 139, 161, 217, 287, 713, 943, 973, 1271, 3197, 4309, 4991, 5699, 6601, 8897, 22379, 29233, 30163, 39893, 99107, 131077, 176669, 204631, 693749, 917539, 1236683, 4063387, 28443709]

約数ペア:

[(1, 28443709), (7, 4063387), (23, 1236683), (31, 917539), (41, 693749), (139, 204631), (161, 176669), (217, 131077), (287, 99107), (713, 39893), (943, 30163), (973, 29233), (1271, 22379), (3197, 8897), (4309, 6601), (4991, 5699)]