81316235

素因数分解:

$5^1\times 7^2\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1$

素因数の和:265

約数の個数: 72

約数和(自身を含む): 135002448

約数和(自身を除く): 53686213

約数列:

[1, 5, 7, 11, 13, 35, 49, 55, 65, 77, 91, 121, 143, 211, 245, 385, 455, 539, 605, 637, 715, 847, 1001, 1055, 1477, 1573, 2321, 2695, 2743, 3185, 4235, 5005, 5929, 7007, 7385, 7865, 10339, 11011, 11605, 13715, 16247, 19201, 25531, 29645, 30173, 35035, 51695, 55055, 77077, 81235, 96005, 113729, 127655, 134407, 150865, 178717, 211211, 331903, 385385, 568645, 672035, 893585, 1056055, 1251019, 1478477, 1659515, 2323321, 6255095, 7392385, 11616605, 16263247, 81316235]

約数ペア:

[(1, 81316235), (5, 16263247), (7, 11616605), (11, 7392385), (13, 6255095), (35, 2323321), (49, 1659515), (55, 1478477), (65, 1251019), (77, 1056055), (91, 893585), (121, 672035), (143, 568645), (211, 385385), (245, 331903), (385, 211211), (455, 178717), (539, 150865), (605, 134407), (637, 127655), (715, 113729), (847, 96005), (1001, 81235), (1055, 77077), (1477, 55055), (1573, 51695), (2321, 35035), (2695, 30173), (2743, 29645), (3185, 25531), (4235, 19201), (5005, 16247), (5929, 13715), (7007, 11605), (7385, 11011), (7865, 10339)]