20731172

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:273

約数の個数: 72

約数和(自身を含む): 47369280

約数和(自身を除く): 26638108

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 29, 44, 58, 77, 116, 121, 154, 203, 211, 242, 308, 319, 406, 422, 484, 638, 812, 844, 847, 1276, 1477, 1694, 2233, 2321, 2954, 3388, 3509, 4466, 4642, 5908, 6119, 7018, 8932, 9284, 12238, 14036, 16247, 24476, 24563, 25531, 32494, 42833, 49126, 51062, 64988, 67309, 85666, 98252, 102124, 134618, 171332, 178717, 269236, 357434, 471163, 714868, 740399, 942326, 1480798, 1884652, 2961596, 5182793, 10365586, 20731172]

約数ペア:

[(1, 20731172), (2, 10365586), (4, 5182793), (7, 2961596), (11, 1884652), (14, 1480798), (22, 942326), (28, 740399), (29, 714868), (44, 471163), (58, 357434), (77, 269236), (116, 178717), (121, 171332), (154, 134618), (203, 102124), (211, 98252), (242, 85666), (308, 67309), (319, 64988), (406, 51062), (422, 49126), (484, 42833), (638, 32494), (812, 25531), (844, 24563), (847, 24476), (1276, 16247), (1477, 14036), (1694, 12238), (2233, 9284), (2321, 8932), (2954, 7018), (3388, 6119), (3509, 5908), (4466, 4642)]