20656251

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{727}}^1$

素因数の和:792

約数の個数: 48

約数和(自身を含む): 38158848

約数和(自身を除く): 17502597

約数列:

[1, 3, 7, 9, 11, 21, 33, 41, 63, 77, 99, 123, 231, 287, 369, 451, 693, 727, 861, 1353, 2181, 2583, 3157, 4059, 5089, 6543, 7997, 9471, 15267, 23991, 28413, 29807, 45801, 55979, 71973, 89421, 167937, 208649, 268263, 327877, 503811, 625947, 983631, 1877841, 2295139, 2950893, 6885417, 20656251]

約数ペア:

[(1, 20656251), (3, 6885417), (7, 2950893), (9, 2295139), (11, 1877841), (21, 983631), (33, 625947), (41, 503811), (63, 327877), (77, 268263), (99, 208649), (123, 167937), (231, 89421), (287, 71973), (369, 55979), (451, 45801), (693, 29807), (727, 28413), (861, 23991), (1353, 15267), (2181, 9471), (2583, 7997), (3157, 6543), (4059, 5089)]