19800565

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{257}}^1\times {\mathrm{811}}^1$

素因数の和:1092

約数の個数: 16

約数和(自身を含む): 25139520

約数和(自身を除く): 5338955

約数列:

[1, 5, 19, 95, 257, 811, 1285, 4055, 4883, 15409, 24415, 77045, 208427, 1042135, 3960113, 19800565]

約数ペア:

[(1, 19800565), (5, 3960113), (19, 1042135), (95, 208427), (257, 77045), (811, 24415), (1285, 15409), (4055, 4883)]