80213180

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1\times {\mathrm{239}}^1$

素因数の和:518

約数の個数: 48

約数和(自身を含む): 171884160

約数和(自身を除く): 91670980

約数列:

[1, 2, 4, 5, 10, 20, 97, 173, 194, 239, 346, 388, 478, 485, 692, 865, 956, 970, 1195, 1730, 1940, 2390, 3460, 4780, 16781, 23183, 33562, 41347, 46366, 67124, 82694, 83905, 92732, 115915, 165388, 167810, 206735, 231830, 335620, 413470, 463660, 826940, 4010659, 8021318, 16042636, 20053295, 40106590, 80213180]

約数ペア:

[(1, 80213180), (2, 40106590), (4, 20053295), (5, 16042636), (10, 8021318), (20, 4010659), (97, 826940), (173, 463660), (194, 413470), (239, 335620), (346, 231830), (388, 206735), (478, 167810), (485, 165388), (692, 115915), (865, 92732), (956, 83905), (970, 82694), (1195, 67124), (1730, 46366), (1940, 41347), (2390, 33562), (3460, 23183), (4780, 16781)]