20315230

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^2$

素因数の和:193

約数の個数: 48

約数和(自身を含む): 41231232

約数和(自身を除く): 20916002

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 71, 130, 142, 155, 310, 355, 403, 710, 806, 923, 1846, 2015, 2201, 4030, 4402, 4615, 5041, 9230, 10082, 11005, 22010, 25205, 28613, 50410, 57226, 65533, 131066, 143065, 156271, 286130, 312542, 327665, 655330, 781355, 1562710, 2031523, 4063046, 10157615, 20315230]

約数ペア:

[(1, 20315230), (2, 10157615), (5, 4063046), (10, 2031523), (13, 1562710), (26, 781355), (31, 655330), (62, 327665), (65, 312542), (71, 286130), (130, 156271), (142, 143065), (155, 131066), (310, 65533), (355, 57226), (403, 50410), (710, 28613), (806, 25205), (923, 22010), (1846, 11005), (2015, 10082), (2201, 9230), (4030, 5041), (4402, 4615)]