19703920

素因数分解:

$2^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{3469}}^1$

素因数の和:3553

約数の個数: 40

約数和(自身を含む): 46470240

約数和(自身を除く): 26766320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 71, 80, 142, 284, 355, 568, 710, 1136, 1420, 2840, 3469, 5680, 6938, 13876, 17345, 27752, 34690, 55504, 69380, 138760, 246299, 277520, 492598, 985196, 1231495, 1970392, 2462990, 3940784, 4925980, 9851960, 19703920]

約数ペア:

[(1, 19703920), (2, 9851960), (4, 4925980), (5, 3940784), (8, 2462990), (10, 1970392), (16, 1231495), (20, 985196), (40, 492598), (71, 277520), (80, 246299), (142, 138760), (284, 69380), (355, 55504), (568, 34690), (710, 27752), (1136, 17345), (1420, 13876), (2840, 6938), (3469, 5680)]