17988880

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{353}}^1$

素因数の和:393

約数の個数: 120

約数和(自身を含む): 52543512

約数和(自身を除く): 34554632

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 16, 20, 26, 28, 35, 40, 49, 52, 56, 65, 70, 80, 91, 98, 104, 112, 130, 140, 182, 196, 208, 245, 260, 280, 353, 364, 392, 455, 490, 520, 560, 637, 706, 728, 784, 910, 980, 1040, 1274, 1412, 1456, 1765, 1820, 1960, 2471, 2548, 2824, 3185, 3530, 3640, 3920, 4589, 4942, 5096, 5648, 6370, 7060, 7280, 9178, 9884, 10192, 12355, 12740, 14120, 17297, 18356, 19768, 22945, 24710, 25480, 28240, 32123, 34594, 36712, 39536, 45890, 49420, 50960, 64246, 69188, 73424, 86485, 91780, 98840, 128492, 138376, 160615, 172970, 183560, 197680, 224861, 256984, 276752, 321230, 345940, 367120, 449722, 513968, 642460, 691880, 899444, 1124305, 1284920, 1383760, 1798888, 2248610, 2569840, 3597776, 4497220, 8994440, 17988880]

約数ペア:

[(1, 17988880), (2, 8994440), (4, 4497220), (5, 3597776), (7, 2569840), (8, 2248610), (10, 1798888), (13, 1383760), (14, 1284920), (16, 1124305), (20, 899444), (26, 691880), (28, 642460), (35, 513968), (40, 449722), (49, 367120), (52, 345940), (56, 321230), (65, 276752), (70, 256984), (80, 224861), (91, 197680), (98, 183560), (104, 172970), (112, 160615), (130, 138376), (140, 128492), (182, 98840), (196, 91780), (208, 86485), (245, 73424), (260, 69188), (280, 64246), (353, 50960), (364, 49420), (392, 45890), (455, 39536), (490, 36712), (520, 34594), (560, 32123), (637, 28240), (706, 25480), (728, 24710), (784, 22945), (910, 19768), (980, 18356), (1040, 17297), (1274, 14120), (1412, 12740), (1456, 12355), (1765, 10192), (1820, 9884), (1960, 9178), (2471, 7280), (2548, 7060), (2824, 6370), (3185, 5648), (3530, 5096), (3640, 4942), (3920, 4589)]