253580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:449

約数の個数: 24

約数和(自身を含む): 551040

約数和(自身を除く): 297460

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 409, 620, 818, 1636, 2045, 4090, 8180, 12679, 25358, 50716, 63395, 126790, 253580]

約数ペア:

[(1, 253580), (2, 126790), (4, 63395), (5, 50716), (10, 25358), (20, 12679), (31, 8180), (62, 4090), (124, 2045), (155, 1636), (310, 818), (409, 620)]