19949860

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{20357}}^1$

素因数の和:20380

約数の個数: 36

約数和(自身を含む): 48737052

約数和(自身を除く): 28787192

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 20357, 40714, 81428, 101785, 142499, 203570, 284998, 407140, 569996, 712495, 997493, 1424990, 1994986, 2849980, 3989972, 4987465, 9974930, 19949860]

約数ペア:

[(1, 19949860), (2, 9974930), (4, 4987465), (5, 3989972), (7, 2849980), (10, 1994986), (14, 1424990), (20, 997493), (28, 712495), (35, 569996), (49, 407140), (70, 284998), (98, 203570), (140, 142499), (196, 101785), (245, 81428), (490, 40714), (980, 20357)]