128331320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:493

約数の個数: 128

約数和(自身を含む): 338688000

約数和(自身を除く): 210356680

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 31, 38, 40, 52, 62, 65, 76, 95, 104, 124, 130, 152, 155, 190, 247, 248, 260, 310, 380, 403, 419, 494, 520, 589, 620, 760, 806, 838, 988, 1178, 1235, 1240, 1612, 1676, 1976, 2015, 2095, 2356, 2470, 2945, 3224, 3352, 4030, 4190, 4712, 4940, 5447, 5890, 7657, 7961, 8060, 8380, 9880, 10894, 11780, 12989, 15314, 15922, 16120, 16760, 21788, 23560, 25978, 27235, 30628, 31844, 38285, 39805, 43576, 51956, 54470, 61256, 63688, 64945, 76570, 79610, 103493, 103912, 108940, 129890, 153140, 159220, 168857, 206986, 217880, 246791, 259780, 306280, 318440, 337714, 413972, 493582, 517465, 519560, 675428, 827944, 844285, 987164, 1034930, 1233955, 1350856, 1688570, 1974328, 2069860, 2467910, 3208283, 3377140, 4139720, 4935820, 6416566, 6754280, 9871640, 12833132, 16041415, 25666264, 32082830, 64165660, 128331320]

約数ペア:

[(1, 128331320), (2, 64165660), (4, 32082830), (5, 25666264), (8, 16041415), (10, 12833132), (13, 9871640), (19, 6754280), (20, 6416566), (26, 4935820), (31, 4139720), (38, 3377140), (40, 3208283), (52, 2467910), (62, 2069860), (65, 1974328), (76, 1688570), (95, 1350856), (104, 1233955), (124, 1034930), (130, 987164), (152, 844285), (155, 827944), (190, 675428), (247, 519560), (248, 517465), (260, 493582), (310, 413972), (380, 337714), (403, 318440), (419, 306280), (494, 259780), (520, 246791), (589, 217880), (620, 206986), (760, 168857), (806, 159220), (838, 153140), (988, 129890), (1178, 108940), (1235, 103912), (1240, 103493), (1612, 79610), (1676, 76570), (1976, 64945), (2015, 63688), (2095, 61256), (2356, 54470), (2470, 51956), (2945, 43576), (3224, 39805), (3352, 38285), (4030, 31844), (4190, 30628), (4712, 27235), (4940, 25978), (5447, 23560), (5890, 21788), (7657, 16760), (7961, 16120), (8060, 15922), (8380, 15314), (9880, 12989), (10894, 11780)]