28131340

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{26539}}^1$

素因数の和:26601

約数の個数: 24

約数和(自身を含む): 60192720

約数和(自身を除く): 32061380

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 212, 265, 530, 1060, 26539, 53078, 106156, 132695, 265390, 530780, 1406567, 2813134, 5626268, 7032835, 14065670, 28131340]

約数ペア:

[(1, 28131340), (2, 14065670), (4, 7032835), (5, 5626268), (10, 2813134), (20, 1406567), (53, 530780), (106, 265390), (212, 132695), (265, 106156), (530, 53078), (1060, 26539)]