20608840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{827}}^1$

素因数の和:934

約数の個数: 64

約数和(自身を含む): 53654400

約数和(自身を除く): 33045560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 140, 178, 280, 356, 445, 623, 712, 827, 890, 1246, 1654, 1780, 2492, 3115, 3308, 3560, 4135, 4984, 5789, 6230, 6616, 8270, 11578, 12460, 16540, 23156, 24920, 28945, 33080, 46312, 57890, 73603, 115780, 147206, 231560, 294412, 368015, 515221, 588824, 736030, 1030442, 1472060, 2060884, 2576105, 2944120, 4121768, 5152210, 10304420, 20608840]

約数ペア:

[(1, 20608840), (2, 10304420), (4, 5152210), (5, 4121768), (7, 2944120), (8, 2576105), (10, 2060884), (14, 1472060), (20, 1030442), (28, 736030), (35, 588824), (40, 515221), (56, 368015), (70, 294412), (89, 231560), (140, 147206), (178, 115780), (280, 73603), (356, 57890), (445, 46312), (623, 33080), (712, 28945), (827, 24920), (890, 23156), (1246, 16540), (1654, 12460), (1780, 11578), (2492, 8270), (3115, 6616), (3308, 6230), (3560, 5789), (4135, 4984)]