21935290

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5443}}^1$

素因数の和:5494

約数の個数: 32

約数和(自身を含む): 43900416

約数和(自身を除く): 21965126

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 5443, 10886, 27215, 54430, 70759, 141518, 168733, 337466, 353795, 707590, 843665, 1687330, 2193529, 4387058, 10967645, 21935290]

約数ペア:

[(1, 21935290), (2, 10967645), (5, 4387058), (10, 2193529), (13, 1687330), (26, 843665), (31, 707590), (62, 353795), (65, 337466), (130, 168733), (155, 141518), (310, 70759), (403, 54430), (806, 27215), (2015, 10886), (4030, 5443)]