20521430

素因数分解:

$2^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{109}}^1\times {\mathrm{281}}^1$

素因数の和:464

約数の個数: 32

約数和(自身を含む): 37968480

約数和(自身を除く): 17447050

約数列:

[1, 2, 5, 10, 67, 109, 134, 218, 281, 335, 545, 562, 670, 1090, 1405, 2810, 7303, 14606, 18827, 30629, 36515, 37654, 61258, 73030, 94135, 153145, 188270, 306290, 2052143, 4104286, 10260715, 20521430]

約数ペア:

[(1, 20521430), (2, 10260715), (5, 4104286), (10, 2052143), (67, 306290), (109, 188270), (134, 153145), (218, 94135), (281, 73030), (335, 61258), (545, 37654), (562, 36515), (670, 30629), (1090, 18827), (1405, 14606), (2810, 7303)]