256885384

素因数分解:

$2^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{64609}}^1$

素因数の和:64693

約数の個数: 32

約数和(自身を含む): 558230400

約数和(自身を除く): 301345016

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 71, 142, 284, 497, 568, 994, 1988, 3976, 64609, 129218, 258436, 452263, 516872, 904526, 1809052, 3618104, 4587239, 9174478, 18348956, 32110673, 36697912, 64221346, 128442692, 256885384]

約数ペア:

[(1, 256885384), (2, 128442692), (4, 64221346), (7, 36697912), (8, 32110673), (14, 18348956), (28, 9174478), (56, 4587239), (71, 3618104), (142, 1809052), (284, 904526), (497, 516872), (568, 452263), (994, 258436), (1988, 129218), (3976, 64609)]