640757908

素因数分解:

$2^2\times 7^2\times {\mathrm{61}}^1\times {\mathrm{53593}}^1$

素因数の和:53672

約数の個数: 36

約数和(自身を含む): 1325808372

約数和(自身を除く): 685050464

約数列:

[1, 2, 4, 7, 14, 28, 49, 61, 98, 122, 196, 244, 427, 854, 1708, 2989, 5978, 11956, 53593, 107186, 214372, 375151, 750302, 1500604, 2626057, 3269173, 5252114, 6538346, 10504228, 13076692, 22884211, 45768422, 91536844, 160189477, 320378954, 640757908]

約数ペア:

[(1, 640757908), (2, 320378954), (4, 160189477), (7, 91536844), (14, 45768422), (28, 22884211), (49, 13076692), (61, 10504228), (98, 6538346), (122, 5252114), (196, 3269173), (244, 2626057), (427, 1500604), (854, 750302), (1708, 375151), (2989, 214372), (5978, 107186), (11956, 53593)]