18784636

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{271}}^1$

素因数の和:362

約数の個数: 48

約数和(自身を含む): 37531648

約数和(自身を除く): 18747012

約数列:

[1, 2, 4, 13, 26, 31, 43, 52, 62, 86, 124, 172, 271, 403, 542, 559, 806, 1084, 1118, 1333, 1612, 2236, 2666, 3523, 5332, 7046, 8401, 11653, 14092, 16802, 17329, 23306, 33604, 34658, 46612, 69316, 109213, 151489, 218426, 302978, 361243, 436852, 605956, 722486, 1444972, 4696159, 9392318, 18784636]

約数ペア:

[(1, 18784636), (2, 9392318), (4, 4696159), (13, 1444972), (26, 722486), (31, 605956), (43, 436852), (52, 361243), (62, 302978), (86, 218426), (124, 151489), (172, 109213), (271, 69316), (403, 46612), (542, 34658), (559, 33604), (806, 23306), (1084, 17329), (1118, 16802), (1333, 14092), (1612, 11653), (2236, 8401), (2666, 7046), (3523, 5332)]