11997155

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{157}}^1$

素因数の和:239

約数の個数: 32

約数和(自身を含む): 16381440

約数和(自身を除く): 4384285

約数列:

[1, 5, 17, 29, 31, 85, 145, 155, 157, 493, 527, 785, 899, 2465, 2635, 2669, 4495, 4553, 4867, 13345, 15283, 22765, 24335, 76415, 77401, 82739, 141143, 387005, 413695, 705715, 2399431, 11997155]

約数ペア:

[(1, 11997155), (5, 2399431), (17, 705715), (29, 413695), (31, 387005), (85, 141143), (145, 82739), (155, 77401), (157, 76415), (493, 24335), (527, 22765), (785, 15283), (899, 13345), (2465, 4867), (2635, 4553), (2669, 4495)]