20117815920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{393541}}^1$

素因数の和:393631

約数の個数: 120

約数和(自身を含む): 68514088032

約数和(自身を除く): 48396272112

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 71, 72, 80, 90, 120, 142, 144, 180, 213, 240, 284, 355, 360, 426, 568, 639, 710, 720, 852, 1065, 1136, 1278, 1420, 1704, 2130, 2556, 2840, 3195, 3408, 4260, 5112, 5680, 6390, 8520, 10224, 12780, 17040, 25560, 51120, 393541, 787082, 1180623, 1574164, 1967705, 2361246, 3148328, 3541869, 3935410, 4722492, 5903115, 6296656, 7083738, 7870820, 9444984, 11806230, 14167476, 15741640, 17709345, 18889968, 23612460, 27941411, 28334952, 31483280, 35418690, 47224920, 55882822, 56669904, 70837380, 83824233, 94449840, 111765644, 139707055, 141674760, 167648466, 223531288, 251472699, 279414110, 283349520, 335296932, 419121165, 447062576, 502945398, 558828220, 670593864, 838242330, 1005890796, 1117656440, 1257363495, 1341187728, 1676484660, 2011781592, 2235312880, 2514726990, 3352969320, 4023563184, 5029453980, 6705938640, 10058907960, 20117815920]

約数ペア:

[(1, 20117815920), (2, 10058907960), (3, 6705938640), (4, 5029453980), (5, 4023563184), (6, 3352969320), (8, 2514726990), (9, 2235312880), (10, 2011781592), (12, 1676484660), (15, 1341187728), (16, 1257363495), (18, 1117656440), (20, 1005890796), (24, 838242330), (30, 670593864), (36, 558828220), (40, 502945398), (45, 447062576), (48, 419121165), (60, 335296932), (71, 283349520), (72, 279414110), (80, 251472699), (90, 223531288), (120, 167648466), (142, 141674760), (144, 139707055), (180, 111765644), (213, 94449840), (240, 83824233), (284, 70837380), (355, 56669904), (360, 55882822), (426, 47224920), (568, 35418690), (639, 31483280), (710, 28334952), (720, 27941411), (852, 23612460), (1065, 18889968), (1136, 17709345), (1278, 15741640), (1420, 14167476), (1704, 11806230), (2130, 9444984), (2556, 7870820), (2840, 7083738), (3195, 6296656), (3408, 5903115), (4260, 4722492), (5112, 3935410), (5680, 3541869), (6390, 3148328), (8520, 2361246), (10224, 1967705), (12780, 1574164), (17040, 1180623), (25560, 787082), (51120, 393541)]