21257535

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109013}}^1$

素因数の和:109034

約数の個数: 16

約数和(自身を含む): 36628704

約数和(自身を除く): 15371169

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 109013, 327039, 545065, 1417169, 1635195, 4251507, 7085845, 21257535]

約数ペア:

[(1, 21257535), (3, 7085845), (5, 4251507), (13, 1635195), (15, 1417169), (39, 545065), (65, 327039), (195, 109013)]