21325680

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{1097}}^1$

素因数の和:1125

約数の個数: 120

約数和(自身を含む): 74338992

約数和(自身を除く): 53013312

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 80, 81, 90, 108, 120, 135, 144, 162, 180, 216, 240, 243, 270, 324, 360, 405, 432, 486, 540, 648, 720, 810, 972, 1080, 1097, 1215, 1296, 1620, 1944, 2160, 2194, 2430, 3240, 3291, 3888, 4388, 4860, 5485, 6480, 6582, 8776, 9720, 9873, 10970, 13164, 16455, 17552, 19440, 19746, 21940, 26328, 29619, 32910, 39492, 43880, 49365, 52656, 59238, 65820, 78984, 87760, 88857, 98730, 118476, 131640, 148095, 157968, 177714, 197460, 236952, 263280, 266571, 296190, 355428, 394920, 444285, 473904, 533142, 592380, 710856, 789840, 888570, 1066284, 1184760, 1332855, 1421712, 1777140, 2132568, 2369520, 2665710, 3554280, 4265136, 5331420, 7108560, 10662840, 21325680]

約数ペア:

[(1, 21325680), (2, 10662840), (3, 7108560), (4, 5331420), (5, 4265136), (6, 3554280), (8, 2665710), (9, 2369520), (10, 2132568), (12, 1777140), (15, 1421712), (16, 1332855), (18, 1184760), (20, 1066284), (24, 888570), (27, 789840), (30, 710856), (36, 592380), (40, 533142), (45, 473904), (48, 444285), (54, 394920), (60, 355428), (72, 296190), (80, 266571), (81, 263280), (90, 236952), (108, 197460), (120, 177714), (135, 157968), (144, 148095), (162, 131640), (180, 118476), (216, 98730), (240, 88857), (243, 87760), (270, 78984), (324, 65820), (360, 59238), (405, 52656), (432, 49365), (486, 43880), (540, 39492), (648, 32910), (720, 29619), (810, 26328), (972, 21940), (1080, 19746), (1097, 19440), (1215, 17552), (1296, 16455), (1620, 13164), (1944, 10970), (2160, 9873), (2194, 9720), (2430, 8776), (3240, 6582), (3291, 6480), (3888, 5485), (4388, 4860)]