640936744

素因数分解:

$2^3\times 7^1\times {\mathrm{47}}^1\times {\mathrm{243517}}^1$

素因数の和:243577

約数の個数: 32

約数和(自身を含む): 1402663680

約数和(自身を除く): 761726936

約数列:

[1, 2, 4, 7, 8, 14, 28, 47, 56, 94, 188, 329, 376, 658, 1316, 2632, 243517, 487034, 974068, 1704619, 1948136, 3409238, 6818476, 11445299, 13636952, 22890598, 45781196, 80117093, 91562392, 160234186, 320468372, 640936744]

約数ペア:

[(1, 640936744), (2, 320468372), (4, 160234186), (7, 91562392), (8, 80117093), (14, 45781196), (28, 22890598), (47, 13636952), (56, 11445299), (94, 6818476), (188, 3409238), (329, 1948136), (376, 1704619), (658, 974068), (1316, 487034), (2632, 243517)]