21780857616

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{64823981}}^1$

素因数の和:64823999

約数の個数: 40

約数和(自身を含む): 64305390144

約数和(自身を除く): 42524532528

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 84, 112, 168, 336, 64823981, 129647962, 194471943, 259295924, 388943886, 453767867, 518591848, 777887772, 907535734, 1037183696, 1361303601, 1555775544, 1815071468, 2722607202, 3111551088, 3630142936, 5445214404, 7260285872, 10890428808, 21780857616]

約数ペア:

[(1, 21780857616), (2, 10890428808), (3, 7260285872), (4, 5445214404), (6, 3630142936), (7, 3111551088), (8, 2722607202), (12, 1815071468), (14, 1555775544), (16, 1361303601), (21, 1037183696), (24, 907535734), (28, 777887772), (42, 518591848), (48, 453767867), (56, 388943886), (84, 259295924), (112, 194471943), (168, 129647962), (336, 64823981)]