20040839

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{173}}^1$

素因数の和:279

約数の個数: 32

約数和(自身を含む): 26503680

約数和(自身を除く): 6462841

約数列:

[1, 7, 13, 19, 67, 91, 133, 173, 247, 469, 871, 1211, 1273, 1729, 2249, 3287, 6097, 8911, 11591, 15743, 16549, 23009, 42731, 81137, 115843, 150683, 220229, 299117, 1054781, 1541603, 2862977, 20040839]

約数ペア:

[(1, 20040839), (7, 2862977), (13, 1541603), (19, 1054781), (67, 299117), (91, 220229), (133, 150683), (173, 115843), (247, 81137), (469, 42731), (871, 23009), (1211, 16549), (1273, 15743), (1729, 11591), (2249, 8911), (3287, 6097)]