19168540

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{719}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 23409380

約数列:

[1, 2, 4, 5, 10, 20, 31, 43, 62, 86, 124, 155, 172, 215, 310, 430, 620, 719, 860, 1333, 1438, 2666, 2876, 3595, 5332, 6665, 7190, 13330, 14380, 22289, 26660, 30917, 44578, 61834, 89156, 111445, 123668, 154585, 222890, 309170, 445780, 618340, 958427, 1916854, 3833708, 4792135, 9584270, 19168540]

約数ペア:

[(1, 19168540), (2, 9584270), (4, 4792135), (5, 3833708), (10, 1916854), (20, 958427), (31, 618340), (43, 445780), (62, 309170), (86, 222890), (124, 154585), (155, 123668), (172, 111445), (215, 89156), (310, 61834), (430, 44578), (620, 30917), (719, 26660), (860, 22289), (1333, 14380), (1438, 13330), (2666, 7190), (2876, 6665), (3595, 5332)]