20946315

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{659}}^1$

素因数の和:843

約数の個数: 32

約数和(自身を含む): 36368640

約数和(自身を除く): 15422325

約数列:

[1, 3, 5, 13, 15, 39, 65, 163, 195, 489, 659, 815, 1977, 2119, 2445, 3295, 6357, 8567, 9885, 10595, 25701, 31785, 42835, 107417, 128505, 322251, 537085, 1396421, 1611255, 4189263, 6982105, 20946315]

約数ペア:

[(1, 20946315), (3, 6982105), (5, 4189263), (13, 1611255), (15, 1396421), (39, 537085), (65, 322251), (163, 128505), (195, 107417), (489, 42835), (659, 31785), (815, 25701), (1977, 10595), (2119, 9885), (2445, 8567), (3295, 6357)]