1221080

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{89}}^1$

素因数の和:121

約数の個数: 64

約数和(自身を含む): 3240000

約数和(自身を除く): 2018920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 89, 98, 140, 178, 196, 245, 280, 343, 356, 392, 445, 490, 623, 686, 712, 890, 980, 1246, 1372, 1715, 1780, 1960, 2492, 2744, 3115, 3430, 3560, 4361, 4984, 6230, 6860, 8722, 12460, 13720, 17444, 21805, 24920, 30527, 34888, 43610, 61054, 87220, 122108, 152635, 174440, 244216, 305270, 610540, 1221080]

約数ペア:

[(1, 1221080), (2, 610540), (4, 305270), (5, 244216), (7, 174440), (8, 152635), (10, 122108), (14, 87220), (20, 61054), (28, 43610), (35, 34888), (40, 30527), (49, 24920), (56, 21805), (70, 17444), (89, 13720), (98, 12460), (140, 8722), (178, 6860), (196, 6230), (245, 4984), (280, 4361), (343, 3560), (356, 3430), (392, 3115), (445, 2744), (490, 2492), (623, 1960), (686, 1780), (712, 1715), (890, 1372), (980, 1246)]