90660340

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1\times {\mathrm{389}}^1$

素因数の和:712

約数の個数: 48

約数和(自身を含む): 196035840

約数和(自身を除く): 105375500

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 271, 389, 430, 542, 778, 860, 1084, 1355, 1556, 1945, 2710, 3890, 5420, 7780, 11653, 16727, 23306, 33454, 46612, 58265, 66908, 83635, 105419, 116530, 167270, 210838, 233060, 334540, 421676, 527095, 1054190, 2108380, 4533017, 9066034, 18132068, 22665085, 45330170, 90660340]

約数ペア:

[(1, 90660340), (2, 45330170), (4, 22665085), (5, 18132068), (10, 9066034), (20, 4533017), (43, 2108380), (86, 1054190), (172, 527095), (215, 421676), (271, 334540), (389, 233060), (430, 210838), (542, 167270), (778, 116530), (860, 105419), (1084, 83635), (1355, 66908), (1556, 58265), (1945, 46612), (2710, 33454), (3890, 23306), (5420, 16727), (7780, 11653)]