221618691

素因数分解:

$3^2\times 7^1\times {\mathrm{59}}^1\times {\mathrm{109}}^1\times {\mathrm{547}}^1$

素因数の和:728

約数の個数: 48

約数和(自身を含む): 376147200

約数和(自身を除く): 154528509

約数列:

[1, 3, 7, 9, 21, 59, 63, 109, 177, 327, 413, 531, 547, 763, 981, 1239, 1641, 2289, 3717, 3829, 4923, 6431, 6867, 11487, 19293, 32273, 34461, 45017, 57879, 59623, 96819, 135051, 178869, 225911, 290457, 405153, 417361, 536607, 677733, 1252083, 2033199, 3517757, 3756249, 10553271, 24624299, 31659813, 73872897, 221618691]

約数ペア:

[(1, 221618691), (3, 73872897), (7, 31659813), (9, 24624299), (21, 10553271), (59, 3756249), (63, 3517757), (109, 2033199), (177, 1252083), (327, 677733), (413, 536607), (531, 417361), (547, 405153), (763, 290457), (981, 225911), (1239, 178869), (1641, 135051), (2289, 96819), (3717, 59623), (3829, 57879), (4923, 45017), (6431, 34461), (6867, 32273), (11487, 19293)]