20838240

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{499}}^1$

素因数の和:549

約数の個数: 144

約数和(自身を含む): 73710000

約数和(自身を除く): 52871760

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 29, 30, 32, 36, 40, 45, 48, 58, 60, 72, 80, 87, 90, 96, 116, 120, 144, 145, 160, 174, 180, 232, 240, 261, 288, 290, 348, 360, 435, 464, 480, 499, 522, 580, 696, 720, 870, 928, 998, 1044, 1160, 1305, 1392, 1440, 1497, 1740, 1996, 2088, 2320, 2495, 2610, 2784, 2994, 3480, 3992, 4176, 4491, 4640, 4990, 5220, 5988, 6960, 7485, 7984, 8352, 8982, 9980, 10440, 11976, 13920, 14471, 14970, 15968, 17964, 19960, 20880, 22455, 23952, 28942, 29940, 35928, 39920, 41760, 43413, 44910, 47904, 57884, 59880, 71856, 72355, 79840, 86826, 89820, 115768, 119760, 130239, 143712, 144710, 173652, 179640, 217065, 231536, 239520, 260478, 289420, 347304, 359280, 434130, 463072, 520956, 578840, 651195, 694608, 718560, 868260, 1041912, 1157680, 1302390, 1389216, 1736520, 2083824, 2315360, 2604780, 3473040, 4167648, 5209560, 6946080, 10419120, 20838240]

約数ペア:

[(1, 20838240), (2, 10419120), (3, 6946080), (4, 5209560), (5, 4167648), (6, 3473040), (8, 2604780), (9, 2315360), (10, 2083824), (12, 1736520), (15, 1389216), (16, 1302390), (18, 1157680), (20, 1041912), (24, 868260), (29, 718560), (30, 694608), (32, 651195), (36, 578840), (40, 520956), (45, 463072), (48, 434130), (58, 359280), (60, 347304), (72, 289420), (80, 260478), (87, 239520), (90, 231536), (96, 217065), (116, 179640), (120, 173652), (144, 144710), (145, 143712), (160, 130239), (174, 119760), (180, 115768), (232, 89820), (240, 86826), (261, 79840), (288, 72355), (290, 71856), (348, 59880), (360, 57884), (435, 47904), (464, 44910), (480, 43413), (499, 41760), (522, 39920), (580, 35928), (696, 29940), (720, 28942), (870, 23952), (928, 22455), (998, 20880), (1044, 19960), (1160, 17964), (1305, 15968), (1392, 14970), (1440, 14471), (1497, 13920), (1740, 11976), (1996, 10440), (2088, 9980), (2320, 8982), (2495, 8352), (2610, 7984), (2784, 7485), (2994, 6960), (3480, 5988), (3992, 5220), (4176, 4990), (4491, 4640)]