71979985

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 114868224

約数和(自身を除く): 42888239

約数列:

[1, 5, 7, 11, 31, 35, 37, 55, 77, 155, 163, 185, 217, 259, 341, 385, 407, 815, 1085, 1141, 1147, 1295, 1705, 1793, 2035, 2387, 2849, 5053, 5705, 5735, 6031, 8029, 8965, 11935, 12551, 12617, 14245, 25265, 30155, 35371, 40145, 42217, 55583, 62755, 63085, 66341, 88319, 176855, 186961, 211085, 277915, 331705, 389081, 441595, 464387, 934805, 1308727, 1945405, 2056571, 2321935, 6543635, 10282855, 14395997, 71979985]

約数ペア:

[(1, 71979985), (5, 14395997), (7, 10282855), (11, 6543635), (31, 2321935), (35, 2056571), (37, 1945405), (55, 1308727), (77, 934805), (155, 464387), (163, 441595), (185, 389081), (217, 331705), (259, 277915), (341, 211085), (385, 186961), (407, 176855), (815, 88319), (1085, 66341), (1141, 63085), (1147, 62755), (1295, 55583), (1705, 42217), (1793, 40145), (2035, 35371), (2387, 30155), (2849, 25265), (5053, 14245), (5705, 12617), (5735, 12551), (6031, 11935), (8029, 8965)]