156978437

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{1759}}^1$

素因数の和:1857

約数の個数: 32

約数和(自身を含む): 209510400

約数和(自身を除く): 52531963

約数列:

[1, 7, 11, 19, 61, 77, 133, 209, 427, 671, 1159, 1463, 1759, 4697, 8113, 12313, 12749, 19349, 33421, 89243, 107299, 135443, 233947, 367631, 751093, 1180289, 2038681, 2573417, 8262023, 14270767, 22425491, 156978437]

約数ペア:

[(1, 156978437), (7, 22425491), (11, 14270767), (19, 8262023), (61, 2573417), (77, 2038681), (133, 1180289), (209, 751093), (427, 367631), (671, 233947), (1159, 135443), (1463, 107299), (1759, 89243), (4697, 33421), (8113, 19349), (12313, 12749)]