27707480

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1$

素因数の和:324

約数の個数: 64

約数和(自身を含む): 64864800

約数和(自身を除く): 37157320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 89, 172, 178, 181, 215, 344, 356, 362, 430, 445, 712, 724, 860, 890, 905, 1448, 1720, 1780, 1810, 3560, 3620, 3827, 7240, 7654, 7783, 15308, 15566, 16109, 19135, 30616, 31132, 32218, 38270, 38915, 62264, 64436, 76540, 77830, 80545, 128872, 153080, 155660, 161090, 311320, 322180, 644360, 692687, 1385374, 2770748, 3463435, 5541496, 6926870, 13853740, 27707480]

約数ペア:

[(1, 27707480), (2, 13853740), (4, 6926870), (5, 5541496), (8, 3463435), (10, 2770748), (20, 1385374), (40, 692687), (43, 644360), (86, 322180), (89, 311320), (172, 161090), (178, 155660), (181, 153080), (215, 128872), (344, 80545), (356, 77830), (362, 76540), (430, 64436), (445, 62264), (712, 38915), (724, 38270), (860, 32218), (890, 31132), (905, 30616), (1448, 19135), (1720, 16109), (1780, 15566), (1810, 15308), (3560, 7783), (3620, 7654), (3827, 7240)]