20418944

素因数分解:

$2^7\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1753}}^1$

素因数の和:1787

約数の個数: 64

約数和(自身を含む): 50094240

約数和(自身を除く): 29675296

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 52, 56, 64, 91, 104, 112, 128, 182, 208, 224, 364, 416, 448, 728, 832, 896, 1456, 1664, 1753, 2912, 3506, 5824, 7012, 11648, 12271, 14024, 22789, 24542, 28048, 45578, 49084, 56096, 91156, 98168, 112192, 159523, 182312, 196336, 224384, 319046, 364624, 392672, 638092, 729248, 785344, 1276184, 1458496, 1570688, 2552368, 2916992, 5104736, 10209472, 20418944]

約数ペア:

[(1, 20418944), (2, 10209472), (4, 5104736), (7, 2916992), (8, 2552368), (13, 1570688), (14, 1458496), (16, 1276184), (26, 785344), (28, 729248), (32, 638092), (52, 392672), (56, 364624), (64, 319046), (91, 224384), (104, 196336), (112, 182312), (128, 159523), (182, 112192), (208, 98168), (224, 91156), (364, 56096), (416, 49084), (448, 45578), (728, 28048), (832, 24542), (896, 22789), (1456, 14024), (1664, 12271), (1753, 11648), (2912, 7012), (3506, 5824)]