20663456

素因数分解:

$2^5\times {\mathrm{11}}^1\times {\mathrm{47}}^1\times {\mathrm{1249}}^1$

素因数の和:1317

約数の個数: 48

約数和(自身を含む): 45360000

約数和(自身を除く): 24696544

約数列:

[1, 2, 4, 8, 11, 16, 22, 32, 44, 47, 88, 94, 176, 188, 352, 376, 517, 752, 1034, 1249, 1504, 2068, 2498, 4136, 4996, 8272, 9992, 13739, 16544, 19984, 27478, 39968, 54956, 58703, 109912, 117406, 219824, 234812, 439648, 469624, 645733, 939248, 1291466, 1878496, 2582932, 5165864, 10331728, 20663456]

約数ペア:

[(1, 20663456), (2, 10331728), (4, 5165864), (8, 2582932), (11, 1878496), (16, 1291466), (22, 939248), (32, 645733), (44, 469624), (47, 439648), (88, 234812), (94, 219824), (176, 117406), (188, 109912), (352, 58703), (376, 54956), (517, 39968), (752, 27478), (1034, 19984), (1249, 16544), (1504, 13739), (2068, 9992), (2498, 8272), (4136, 4996)]