28730980

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{16141}}^1$

素因数の和:16239

約数の個数: 24

約数和(自身を含む): 61016760

約数和(自身を除く): 32285780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 16141, 32282, 64564, 80705, 161410, 322820, 1436549, 2873098, 5746196, 7182745, 14365490, 28730980]

約数ペア:

[(1, 28730980), (2, 14365490), (4, 7182745), (5, 5746196), (10, 2873098), (20, 1436549), (89, 322820), (178, 161410), (356, 80705), (445, 64564), (890, 32282), (1780, 16141)]