81980855

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{283}}^1$

素因数の和:551

約数の個数: 32

約数和(自身を含む): 112872960

約数和(自身を除く): 30892105

約数列:

[1, 5, 11, 23, 55, 115, 229, 253, 283, 1145, 1265, 1415, 2519, 3113, 5267, 6509, 12595, 15565, 26335, 32545, 57937, 64807, 71599, 289685, 324035, 357995, 712877, 1490561, 3564385, 7452805, 16396171, 81980855]

約数ペア:

[(1, 81980855), (5, 16396171), (11, 7452805), (23, 3564385), (55, 1490561), (115, 712877), (229, 357995), (253, 324035), (283, 289685), (1145, 71599), (1265, 64807), (1415, 57937), (2519, 32545), (3113, 26335), (5267, 15565), (6509, 12595)]