4001440

素因数分解:

$2^5\times 5^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1$

素因数の和:385

約数の個数: 48

約数和(自身を含む): 9593640

約数和(自身を除く): 5592200

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 89, 160, 178, 281, 356, 445, 562, 712, 890, 1124, 1405, 1424, 1780, 2248, 2810, 2848, 3560, 4496, 5620, 7120, 8992, 11240, 14240, 22480, 25009, 44960, 50018, 100036, 125045, 200072, 250090, 400144, 500180, 800288, 1000360, 2000720, 4001440]

約数ペア:

[(1, 4001440), (2, 2000720), (4, 1000360), (5, 800288), (8, 500180), (10, 400144), (16, 250090), (20, 200072), (32, 125045), (40, 100036), (80, 50018), (89, 44960), (160, 25009), (178, 22480), (281, 14240), (356, 11240), (445, 8992), (562, 7120), (712, 5620), (890, 4496), (1124, 3560), (1405, 2848), (1424, 2810), (1780, 2248)]