639236788

素因数分解:

$2^2\times {\mathrm{17}}^2\times {\mathrm{431}}^1\times {\mathrm{1283}}^1$

素因数の和:1752

約数の個数: 36

約数和(自身を含む): 1192024512

約数和(自身を除く): 552787724

約数列:

[1, 2, 4, 17, 34, 68, 289, 431, 578, 862, 1156, 1283, 1724, 2566, 5132, 7327, 14654, 21811, 29308, 43622, 87244, 124559, 249118, 370787, 498236, 552973, 741574, 1105946, 1483148, 2211892, 9400541, 18801082, 37602164, 159809197, 319618394, 639236788]

約数ペア:

[(1, 639236788), (2, 319618394), (4, 159809197), (17, 37602164), (34, 18801082), (68, 9400541), (289, 2211892), (431, 1483148), (578, 1105946), (862, 741574), (1156, 552973), (1283, 498236), (1724, 370787), (2566, 249118), (5132, 124559), (7327, 87244), (14654, 43622), (21811, 29308)]