21653541

素因数分解:

$3^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1259}}^1$

素因数の和:1295

約数の個数: 48

約数和(自身を含む): 40219200

約数和(自身を除く): 18565659

約数列:

[1, 3, 7, 9, 13, 21, 27, 39, 49, 63, 91, 117, 147, 189, 273, 351, 441, 637, 819, 1259, 1323, 1911, 2457, 3777, 5733, 8813, 11331, 16367, 17199, 26439, 33993, 49101, 61691, 79317, 114569, 147303, 185073, 237951, 343707, 441909, 555219, 801983, 1031121, 1665657, 2405949, 3093363, 7217847, 21653541]

約数ペア:

[(1, 21653541), (3, 7217847), (7, 3093363), (9, 2405949), (13, 1665657), (21, 1031121), (27, 801983), (39, 555219), (49, 441909), (63, 343707), (91, 237951), (117, 185073), (147, 147303), (189, 114569), (273, 79317), (351, 61691), (441, 49101), (637, 33993), (819, 26439), (1259, 17199), (1323, 16367), (1911, 11331), (2457, 8813), (3777, 5733)]