21081736

素因数分解:

$2^3\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{503}}^1$

素因数の和:566

約数の個数: 48

約数和(自身を含む): 44271360

約数和(自身を除く): 23189624

約数列:

[1, 2, 4, 8, 13, 26, 31, 52, 62, 104, 124, 169, 248, 338, 403, 503, 676, 806, 1006, 1352, 1612, 2012, 3224, 4024, 5239, 6539, 10478, 13078, 15593, 20956, 26156, 31186, 41912, 52312, 62372, 85007, 124744, 170014, 202709, 340028, 405418, 680056, 810836, 1621672, 2635217, 5270434, 10540868, 21081736]

約数ペア:

[(1, 21081736), (2, 10540868), (4, 5270434), (8, 2635217), (13, 1621672), (26, 810836), (31, 680056), (52, 405418), (62, 340028), (104, 202709), (124, 170014), (169, 124744), (248, 85007), (338, 62372), (403, 52312), (503, 41912), (676, 31186), (806, 26156), (1006, 20956), (1352, 15593), (1612, 13078), (2012, 10478), (3224, 6539), (4024, 5239)]