27779720

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{521}}^1$

素因数の和:606

約数の個数: 64

約数和(自身を含む): 66147840

約数和(自身を除く): 38368120

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 430, 521, 620, 860, 1042, 1240, 1333, 1720, 2084, 2605, 2666, 4168, 5210, 5332, 6665, 10420, 10664, 13330, 16151, 20840, 22403, 26660, 32302, 44806, 53320, 64604, 80755, 89612, 112015, 129208, 161510, 179224, 224030, 323020, 448060, 646040, 694493, 896120, 1388986, 2777972, 3472465, 5555944, 6944930, 13889860, 27779720]

約数ペア:

[(1, 27779720), (2, 13889860), (4, 6944930), (5, 5555944), (8, 3472465), (10, 2777972), (20, 1388986), (31, 896120), (40, 694493), (43, 646040), (62, 448060), (86, 323020), (124, 224030), (155, 179224), (172, 161510), (215, 129208), (248, 112015), (310, 89612), (344, 80755), (430, 64604), (521, 53320), (620, 44806), (860, 32302), (1042, 26660), (1240, 22403), (1333, 20840), (1720, 16151), (2084, 13330), (2605, 10664), (2666, 10420), (4168, 6665), (5210, 5332)]