638963020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{16631}}^1$

素因数の和:16770

約数の個数: 48

約数和(自身を含む): 1433412288

約数和(自身を除く): 794449268

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 113, 170, 226, 340, 452, 565, 1130, 1921, 2260, 3842, 7684, 9605, 16631, 19210, 33262, 38420, 66524, 83155, 166310, 282727, 332620, 565454, 1130908, 1413635, 1879303, 2827270, 3758606, 5654540, 7517212, 9396515, 18793030, 31948151, 37586060, 63896302, 127792604, 159740755, 319481510, 638963020]

約数ペア:

[(1, 638963020), (2, 319481510), (4, 159740755), (5, 127792604), (10, 63896302), (17, 37586060), (20, 31948151), (34, 18793030), (68, 9396515), (85, 7517212), (113, 5654540), (170, 3758606), (226, 2827270), (340, 1879303), (452, 1413635), (565, 1130908), (1130, 565454), (1921, 332620), (2260, 282727), (3842, 166310), (7684, 83155), (9605, 66524), (16631, 38420), (19210, 33262)]