131212565

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{109}}^1\times {\mathrm{509}}^1$

素因数の和:677

約数の個数: 32

約数和(自身を含む): 177724800

約数和(自身を除く): 46512235

約数列:

[1, 5, 11, 43, 55, 109, 215, 473, 509, 545, 1199, 2365, 2545, 4687, 5599, 5995, 21887, 23435, 27995, 51557, 55481, 109435, 240757, 257785, 277405, 610291, 1203785, 2385683, 3051455, 11928415, 26242513, 131212565]

約数ペア:

[(1, 131212565), (5, 26242513), (11, 11928415), (43, 3051455), (55, 2385683), (109, 1203785), (215, 610291), (473, 277405), (509, 257785), (545, 240757), (1199, 109435), (2365, 55481), (2545, 51557), (4687, 27995), (5599, 23435), (5995, 21887)]