80239780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{129419}}^1$

素因数の和:129459

約数の個数: 24

約数和(自身を含む): 173940480

約数和(自身を除く): 93700700

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 129419, 258838, 517676, 647095, 1294190, 2588380, 4011989, 8023978, 16047956, 20059945, 40119890, 80239780]

約数ペア:

[(1, 80239780), (2, 40119890), (4, 20059945), (5, 16047956), (10, 8023978), (20, 4011989), (31, 2588380), (62, 1294190), (124, 647095), (155, 517676), (310, 258838), (620, 129419)]