155540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:128

約数の個数: 48

約数和(自身を含む): 411264

約数和(自身を除く): 255724

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 101, 110, 140, 154, 202, 220, 308, 385, 404, 505, 707, 770, 1010, 1111, 1414, 1540, 2020, 2222, 2828, 3535, 4444, 5555, 7070, 7777, 11110, 14140, 15554, 22220, 31108, 38885, 77770, 155540]

約数ペア:

[(1, 155540), (2, 77770), (4, 38885), (5, 31108), (7, 22220), (10, 15554), (11, 14140), (14, 11110), (20, 7777), (22, 7070), (28, 5555), (35, 4444), (44, 3535), (55, 2828), (70, 2222), (77, 2020), (101, 1540), (110, 1414), (140, 1111), (154, 1010), (202, 770), (220, 707), (308, 505), (385, 404)]