90281780

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1\times {\mathrm{269}}^1$

素因数の和:548

約数の個数: 48

約数和(自身を含む): 193369680

約数和(自身を除く): 103087900

約数列:

[1, 2, 4, 5, 10, 20, 97, 173, 194, 269, 346, 388, 485, 538, 692, 865, 970, 1076, 1345, 1730, 1940, 2690, 3460, 5380, 16781, 26093, 33562, 46537, 52186, 67124, 83905, 93074, 104372, 130465, 167810, 186148, 232685, 260930, 335620, 465370, 521860, 930740, 4514089, 9028178, 18056356, 22570445, 45140890, 90281780]

約数ペア:

[(1, 90281780), (2, 45140890), (4, 22570445), (5, 18056356), (10, 9028178), (20, 4514089), (97, 930740), (173, 521860), (194, 465370), (269, 335620), (346, 260930), (388, 232685), (485, 186148), (538, 167810), (692, 130465), (865, 104372), (970, 93074), (1076, 83905), (1345, 67124), (1730, 52186), (1940, 46537), (2690, 33562), (3460, 26093), (5380, 16781)]