21131318

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{461}}^1$

素因数の和:560

約数の個数: 32

約数和(自身を含む): 35858592

約数和(自身を除く): 14727274

約数列:

[1, 2, 13, 26, 41, 43, 82, 86, 461, 533, 559, 922, 1066, 1118, 1763, 3526, 5993, 11986, 18901, 19823, 22919, 37802, 39646, 45838, 245713, 257699, 491426, 515398, 812743, 1625486, 10565659, 21131318]

約数ペア:

[(1, 21131318), (2, 10565659), (13, 1625486), (26, 812743), (41, 515398), (43, 491426), (82, 257699), (86, 245713), (461, 45838), (533, 39646), (559, 37802), (922, 22919), (1066, 19823), (1118, 18901), (1763, 11986), (3526, 5993)]