257896688

素因数分解:

$2^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{74279}}^1$

素因数の和:74325

約数の個数: 40

約数和(自身を含む): 589486080

約数和(自身を除く): 331589392

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 31, 56, 62, 112, 124, 217, 248, 434, 496, 868, 1736, 3472, 74279, 148558, 297116, 519953, 594232, 1039906, 1188464, 2079812, 2302649, 4159624, 4605298, 8319248, 9210596, 16118543, 18421192, 32237086, 36842384, 64474172, 128948344, 257896688]

約数ペア:

[(1, 257896688), (2, 128948344), (4, 64474172), (7, 36842384), (8, 32237086), (14, 18421192), (16, 16118543), (28, 9210596), (31, 8319248), (56, 4605298), (62, 4159624), (112, 2302649), (124, 2079812), (217, 1188464), (248, 1039906), (434, 594232), (496, 519953), (868, 297116), (1736, 148558), (3472, 74279)]