638431312

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{19267}}^1$

素因数の和:19403

約数の個数: 40

約数和(自身を含む): 1314077600

約数和(自身を除く): 675646288

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 109, 152, 218, 304, 436, 872, 1744, 2071, 4142, 8284, 16568, 19267, 33136, 38534, 77068, 154136, 308272, 366073, 732146, 1464292, 2100103, 2928584, 4200206, 5857168, 8400412, 16800824, 33601648, 39901957, 79803914, 159607828, 319215656, 638431312]

約数ペア:

[(1, 638431312), (2, 319215656), (4, 159607828), (8, 79803914), (16, 39901957), (19, 33601648), (38, 16800824), (76, 8400412), (109, 5857168), (152, 4200206), (218, 2928584), (304, 2100103), (436, 1464292), (872, 732146), (1744, 366073), (2071, 308272), (4142, 154136), (8284, 77068), (16568, 38534), (19267, 33136)]