19804330

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3109}}^1$

素因数の和:3143

約数の個数: 48

約数和(自身を含む): 44672040

約数和(自身を除く): 24867710

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 3109, 3185, 6218, 6370, 15545, 21763, 31090, 40417, 43526, 80834, 108815, 152341, 202085, 217630, 282919, 304682, 404170, 565838, 761705, 1414595, 1523410, 1980433, 2829190, 3960866, 9902165, 19804330]

約数ペア:

[(1, 19804330), (2, 9902165), (5, 3960866), (7, 2829190), (10, 1980433), (13, 1523410), (14, 1414595), (26, 761705), (35, 565838), (49, 404170), (65, 304682), (70, 282919), (91, 217630), (98, 202085), (130, 152341), (182, 108815), (245, 80834), (455, 43526), (490, 40417), (637, 31090), (910, 21763), (1274, 15545), (3109, 6370), (3185, 6218)]