55516420

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{31189}}^1$

素因数の和:31287

約数の個数: 24

約数和(自身を含む): 117898200

約数和(自身を除く): 62381780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 31189, 62378, 124756, 155945, 311890, 623780, 2775821, 5551642, 11103284, 13879105, 27758210, 55516420]

約数ペア:

[(1, 55516420), (2, 27758210), (4, 13879105), (5, 11103284), (10, 5551642), (20, 2775821), (89, 623780), (178, 311890), (356, 155945), (445, 124756), (890, 62378), (1780, 31189)]