21619864

素因数分解:

$2^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{6329}}^1$

素因数の和:6403

約数の個数: 32

約数和(自身を含む): 47095200

約数和(自身を除く): 25475336

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 61, 122, 244, 427, 488, 854, 1708, 3416, 6329, 12658, 25316, 44303, 50632, 88606, 177212, 354424, 386069, 772138, 1544276, 2702483, 3088552, 5404966, 10809932, 21619864]

約数ペア:

[(1, 21619864), (2, 10809932), (4, 5404966), (7, 3088552), (8, 2702483), (14, 1544276), (28, 772138), (56, 386069), (61, 354424), (122, 177212), (244, 88606), (427, 50632), (488, 44303), (854, 25316), (1708, 12658), (3416, 6329)]