399828971521

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{1380439}}^1$

素因数の和:1380733

約数の個数: 24

約数和(自身を含む): 487218015360

約数和(自身を除く): 87389043839

約数列:

[1, 7, 23, 49, 161, 257, 1127, 1799, 5911, 12593, 41377, 289639, 1380439, 9663073, 31750097, 67641511, 222250679, 354772823, 1555754753, 2483409761, 8159774929, 17383868327, 57118424503, 399828971521]

約数ペア:

[(1, 399828971521), (7, 57118424503), (23, 17383868327), (49, 8159774929), (161, 2483409761), (257, 1555754753), (1127, 354772823), (1799, 222250679), (5911, 67641511), (12593, 31750097), (41377, 9663073), (289639, 1380439)]