81264470

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:365

約数の個数: 64

約数和(自身を含む): 172440576

約数和(自身を除く): 91176106

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 71, 83, 142, 166, 197, 355, 394, 415, 497, 581, 710, 830, 985, 994, 1162, 1379, 1970, 2485, 2758, 2905, 4970, 5810, 5893, 6895, 11786, 13790, 13987, 16351, 27974, 29465, 32702, 41251, 58930, 69935, 81755, 82502, 97909, 114457, 139870, 163510, 195818, 206255, 228914, 412510, 489545, 572285, 979090, 1144570, 1160921, 2321842, 5804605, 8126447, 11609210, 16252894, 40632235, 81264470]

約数ペア:

[(1, 81264470), (2, 40632235), (5, 16252894), (7, 11609210), (10, 8126447), (14, 5804605), (35, 2321842), (70, 1160921), (71, 1144570), (83, 979090), (142, 572285), (166, 489545), (197, 412510), (355, 228914), (394, 206255), (415, 195818), (497, 163510), (581, 139870), (710, 114457), (830, 97909), (985, 82502), (994, 81755), (1162, 69935), (1379, 58930), (1970, 41251), (2485, 32702), (2758, 29465), (2905, 27974), (4970, 16351), (5810, 13987), (5893, 13790), (6895, 11786)]