87820520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{70823}}^1$

素因数の和:70865

約数の個数: 32

約数和(自身を含む): 203973120

約数和(自身を除く): 116152600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 70823, 141646, 283292, 354115, 566584, 708230, 1416460, 2195513, 2832920, 4391026, 8782052, 10977565, 17564104, 21955130, 43910260, 87820520]

約数ペア:

[(1, 87820520), (2, 43910260), (4, 21955130), (5, 17564104), (8, 10977565), (10, 8782052), (20, 4391026), (31, 2832920), (40, 2195513), (62, 1416460), (124, 708230), (155, 566584), (248, 354115), (310, 283292), (620, 141646), (1240, 70823)]