18838688

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{491}}^1$

素因数の和:621

約数の個数: 48

約数和(自身を含む): 40914720

約数和(自身を除く): 22076032

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 88, 109, 176, 218, 352, 436, 491, 872, 982, 1199, 1744, 1964, 2398, 3488, 3928, 4796, 5401, 7856, 9592, 10802, 15712, 19184, 21604, 38368, 43208, 53519, 86416, 107038, 172832, 214076, 428152, 588709, 856304, 1177418, 1712608, 2354836, 4709672, 9419344, 18838688]

約数ペア:

[(1, 18838688), (2, 9419344), (4, 4709672), (8, 2354836), (11, 1712608), (16, 1177418), (22, 856304), (32, 588709), (44, 428152), (88, 214076), (109, 172832), (176, 107038), (218, 86416), (352, 53519), (436, 43208), (491, 38368), (872, 21604), (982, 19184), (1199, 15712), (1744, 10802), (1964, 9592), (2398, 7856), (3488, 5401), (3928, 4796)]