20405720168

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{1579}}^1\times {\mathrm{85021}}^1$

素因数の和:86625

約数の個数: 32

約数和(自身を含む): 40300428000

約数和(自身を除く): 19894707832

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 1579, 3158, 6316, 12632, 30001, 60002, 85021, 120004, 170042, 240008, 340084, 680168, 1615399, 3230798, 6461596, 12923192, 134248159, 268496318, 536992636, 1073985272, 2550715021, 5101430042, 10202860084, 20405720168]

約数ペア:

[(1, 20405720168), (2, 10202860084), (4, 5101430042), (8, 2550715021), (19, 1073985272), (38, 536992636), (76, 268496318), (152, 134248159), (1579, 12923192), (3158, 6461596), (6316, 3230798), (12632, 1615399), (30001, 680168), (60002, 340084), (85021, 240008), (120004, 170042)]