21653142

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{3709}}^1$

素因数の和:3860

約数の個数: 32

約数和(自身を含む): 49862400

約数和(自身を除く): 28209258

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 139, 278, 417, 834, 973, 1946, 2919, 3709, 5838, 7418, 11127, 22254, 25963, 51926, 77889, 155778, 515551, 1031102, 1546653, 3093306, 3608857, 7217714, 10826571, 21653142]

約数ペア:

[(1, 21653142), (2, 10826571), (3, 7217714), (6, 3608857), (7, 3093306), (14, 1546653), (21, 1031102), (42, 515551), (139, 155778), (278, 77889), (417, 51926), (834, 25963), (973, 22254), (1946, 11127), (2919, 7418), (3709, 5838)]