639778900

素因数分解:

$2^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{120713}}^1$

素因数の和:120780

約数の個数: 36

約数和(自身を含む): 1414526652

約数和(自身を除く): 774747752

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 212, 265, 530, 1060, 1325, 2650, 5300, 120713, 241426, 482852, 603565, 1207130, 2414260, 3017825, 6035650, 6397789, 12071300, 12795578, 25591156, 31988945, 63977890, 127955780, 159944725, 319889450, 639778900]

約数ペア:

[(1, 639778900), (2, 319889450), (4, 159944725), (5, 127955780), (10, 63977890), (20, 31988945), (25, 25591156), (50, 12795578), (53, 12071300), (100, 6397789), (106, 6035650), (212, 3017825), (265, 2414260), (530, 1207130), (1060, 603565), (1325, 482852), (2650, 241426), (5300, 120713)]