660380

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:158

約数の個数: 48

約数和(自身を含む): 1632960

約数和(自身を除く): 972580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 53, 70, 89, 106, 140, 178, 212, 265, 356, 371, 445, 530, 623, 742, 890, 1060, 1246, 1484, 1780, 1855, 2492, 3115, 3710, 4717, 6230, 7420, 9434, 12460, 18868, 23585, 33019, 47170, 66038, 94340, 132076, 165095, 330190, 660380]

約数ペア:

[(1, 660380), (2, 330190), (4, 165095), (5, 132076), (7, 94340), (10, 66038), (14, 47170), (20, 33019), (28, 23585), (35, 18868), (53, 12460), (70, 9434), (89, 7420), (106, 6230), (140, 4717), (178, 3710), (212, 3115), (265, 2492), (356, 1855), (371, 1780), (445, 1484), (530, 1246), (623, 1060), (742, 890)]