8451440

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1187}}^1$

素因数の和:1289

約数の個数: 40

約数和(自身を含む): 19887120

約数和(自身を除く): 11435680

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1187, 1424, 1780, 2374, 3560, 4748, 5935, 7120, 9496, 11870, 18992, 23740, 47480, 94960, 105643, 211286, 422572, 528215, 845144, 1056430, 1690288, 2112860, 4225720, 8451440]

約数ペア:

[(1, 8451440), (2, 4225720), (4, 2112860), (5, 1690288), (8, 1056430), (10, 845144), (16, 528215), (20, 422572), (40, 211286), (80, 105643), (89, 94960), (178, 47480), (356, 23740), (445, 18992), (712, 11870), (890, 9496), (1187, 7120), (1424, 5935), (1780, 4748), (2374, 3560)]