31405790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{7793}}^1$

素因数の和:7844

約数の個数: 32

約数和(自身を含む): 62850816

約数和(自身を除く): 31445026

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 7793, 15586, 38965, 77930, 101309, 202618, 241583, 483166, 506545, 1013090, 1207915, 2415830, 3140579, 6281158, 15702895, 31405790]

約数ペア:

[(1, 31405790), (2, 15702895), (5, 6281158), (10, 3140579), (13, 2415830), (26, 1207915), (31, 1013090), (62, 506545), (65, 483166), (130, 241583), (155, 202618), (310, 101309), (403, 77930), (806, 38965), (2015, 15586), (4030, 7793)]