31784920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{25633}}^1$

素因数の和:25675

約数の個数: 32

約数和(自身を含む): 73825920

約数和(自身を除く): 42041000

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 25633, 51266, 102532, 128165, 205064, 256330, 512660, 794623, 1025320, 1589246, 3178492, 3973115, 6356984, 7946230, 15892460, 31784920]

約数ペア:

[(1, 31784920), (2, 15892460), (4, 7946230), (5, 6356984), (8, 3973115), (10, 3178492), (20, 1589246), (31, 1025320), (40, 794623), (62, 512660), (124, 256330), (155, 205064), (248, 128165), (310, 102532), (620, 51266), (1240, 25633)]