20996346

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{137}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 50077440

約数和(自身を除く): 29081094

約数列:

[1, 2, 3, 6, 7, 14, 21, 41, 42, 82, 89, 123, 137, 178, 246, 267, 274, 287, 411, 534, 574, 623, 822, 861, 959, 1246, 1722, 1869, 1918, 2877, 3649, 3738, 5617, 5754, 7298, 10947, 11234, 12193, 16851, 21894, 24386, 25543, 33702, 36579, 39319, 51086, 73158, 76629, 78638, 85351, 117957, 153258, 170702, 235914, 256053, 499913, 512106, 999826, 1499739, 2999478, 3499391, 6998782, 10498173, 20996346]

約数ペア:

[(1, 20996346), (2, 10498173), (3, 6998782), (6, 3499391), (7, 2999478), (14, 1499739), (21, 999826), (41, 512106), (42, 499913), (82, 256053), (89, 235914), (123, 170702), (137, 153258), (178, 117957), (246, 85351), (267, 78638), (274, 76629), (287, 73158), (411, 51086), (534, 39319), (574, 36579), (623, 33702), (822, 25543), (861, 24386), (959, 21894), (1246, 16851), (1722, 12193), (1869, 11234), (1918, 10947), (2877, 7298), (3649, 5754), (3738, 5617)]