640311476

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^2\times {\mathrm{63347}}^1$

素因数の和:63396

約数の個数: 36

約数和(自身を含む): 1351592928

約数和(自身を除く): 711281452

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 361, 532, 722, 1444, 2527, 5054, 10108, 63347, 126694, 253388, 443429, 886858, 1203593, 1773716, 2407186, 4814372, 8425151, 16850302, 22868267, 33700604, 45736534, 91473068, 160077869, 320155738, 640311476]

約数ペア:

[(1, 640311476), (2, 320155738), (4, 160077869), (7, 91473068), (14, 45736534), (19, 33700604), (28, 22868267), (38, 16850302), (76, 8425151), (133, 4814372), (266, 2407186), (361, 1773716), (532, 1203593), (722, 886858), (1444, 443429), (2527, 253388), (5054, 126694), (10108, 63347)]