81002380

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{130649}}^1$

素因数の和:130689

約数の個数: 24

約数和(自身を含む): 175593600

約数和(自身を除く): 94591220

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 130649, 261298, 522596, 653245, 1306490, 2612980, 4050119, 8100238, 16200476, 20250595, 40501190, 81002380]

約数ペア:

[(1, 81002380), (2, 40501190), (4, 20250595), (5, 16200476), (10, 8100238), (20, 4050119), (31, 2612980), (62, 1306490), (124, 653245), (155, 522596), (310, 261298), (620, 130649)]