21986848

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{3109}}^1$

素因数の和:3149

約数の個数: 48

約数和(自身を含む): 49374360

約数和(自身を除く): 27387512

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 32, 34, 52, 68, 104, 136, 208, 221, 272, 416, 442, 544, 884, 1768, 3109, 3536, 6218, 7072, 12436, 24872, 40417, 49744, 52853, 80834, 99488, 105706, 161668, 211412, 323336, 422824, 646672, 687089, 845648, 1293344, 1374178, 1691296, 2748356, 5496712, 10993424, 21986848]

約数ペア:

[(1, 21986848), (2, 10993424), (4, 5496712), (8, 2748356), (13, 1691296), (16, 1374178), (17, 1293344), (26, 845648), (32, 687089), (34, 646672), (52, 422824), (68, 323336), (104, 211412), (136, 161668), (208, 105706), (221, 99488), (272, 80834), (416, 52853), (442, 49744), (544, 40417), (884, 24872), (1768, 12436), (3109, 7072), (3536, 6218)]