21640178

素因数分解:

$2^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{13679}}^1$

素因数の和:13801

約数の個数: 16

約数和(自身を含む): 37428480

約数和(自身を除く): 15788302

約数列:

[1, 2, 7, 14, 113, 226, 791, 1582, 13679, 27358, 95753, 191506, 1545727, 3091454, 10820089, 21640178]

約数ペア:

[(1, 21640178), (2, 10820089), (7, 3091454), (14, 1545727), (113, 191506), (226, 95753), (791, 27358), (1582, 13679)]