81400172

素因数分解:

$2^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{13397}}^1$

素因数の和:13446

約数の個数: 36

約数和(自身を含む): 171065664

約数和(自身を除く): 89665492

約数列:

[1, 2, 4, 7, 14, 28, 31, 49, 62, 98, 124, 196, 217, 434, 868, 1519, 3038, 6076, 13397, 26794, 53588, 93779, 187558, 375116, 415307, 656453, 830614, 1312906, 1661228, 2625812, 2907149, 5814298, 11628596, 20350043, 40700086, 81400172]

約数ペア:

[(1, 81400172), (2, 40700086), (4, 20350043), (7, 11628596), (14, 5814298), (28, 2907149), (31, 2625812), (49, 1661228), (62, 1312906), (98, 830614), (124, 656453), (196, 415307), (217, 375116), (434, 187558), (868, 93779), (1519, 53588), (3038, 26794), (6076, 13397)]