257029220

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{1835923}}^1$

素因数の和:1835939

約数の個数: 24

約数和(自身を含む): 616870464

約数和(自身を除く): 359841244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 1835923, 3671846, 7343692, 9179615, 12851461, 18359230, 25702922, 36718460, 51405844, 64257305, 128514610, 257029220]

約数ペア:

[(1, 257029220), (2, 128514610), (4, 64257305), (5, 51405844), (7, 36718460), (10, 25702922), (14, 18359230), (20, 12851461), (28, 9179615), (35, 7343692), (70, 3671846), (140, 1835923)]