28703090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{220793}}^1$

素因数の和:220813

約数の個数: 16

約数和(自身を含む): 55640088

約数和(自身を除く): 26936998

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 220793, 441586, 1103965, 2207930, 2870309, 5740618, 14351545, 28703090]

約数ペア:

[(1, 28703090), (2, 14351545), (5, 5740618), (10, 2870309), (13, 2207930), (26, 1103965), (65, 441586), (130, 220793)]