647975380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{31547}}^1$

素因数の和:31648

約数の個数: 48

約数和(自身を含む): 1484017920

約数和(自身を除く): 836042540

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 79, 130, 158, 260, 316, 395, 790, 1027, 1580, 2054, 4108, 5135, 10270, 20540, 31547, 63094, 126188, 157735, 315470, 410111, 630940, 820222, 1640444, 2050555, 2492213, 4101110, 4984426, 8202220, 9968852, 12461065, 24922130, 32398769, 49844260, 64797538, 129595076, 161993845, 323987690, 647975380]

約数ペア:

[(1, 647975380), (2, 323987690), (4, 161993845), (5, 129595076), (10, 64797538), (13, 49844260), (20, 32398769), (26, 24922130), (52, 12461065), (65, 9968852), (79, 8202220), (130, 4984426), (158, 4101110), (260, 2492213), (316, 2050555), (395, 1640444), (790, 820222), (1027, 630940), (1580, 410111), (2054, 315470), (4108, 157735), (5135, 126188), (10270, 63094), (20540, 31547)]