20123646440

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{467}}^1\times {\mathrm{15173}}^1$

素因数の和:15722

約数の個数: 64

約数和(自身を含む): 46017279360

約数和(自身を除く): 25893632920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 467, 568, 710, 934, 1420, 1868, 2335, 2840, 3736, 4670, 9340, 15173, 18680, 30346, 33157, 60692, 66314, 75865, 121384, 132628, 151730, 165785, 265256, 303460, 331570, 606920, 663140, 1077283, 1326280, 2154566, 4309132, 5386415, 7085791, 8618264, 10772830, 14171582, 21545660, 28343164, 35428955, 43091320, 56686328, 70857910, 141715820, 283431640, 503091161, 1006182322, 2012364644, 2515455805, 4024729288, 5030911610, 10061823220, 20123646440]

約数ペア:

[(1, 20123646440), (2, 10061823220), (4, 5030911610), (5, 4024729288), (8, 2515455805), (10, 2012364644), (20, 1006182322), (40, 503091161), (71, 283431640), (142, 141715820), (284, 70857910), (355, 56686328), (467, 43091320), (568, 35428955), (710, 28343164), (934, 21545660), (1420, 14171582), (1868, 10772830), (2335, 8618264), (2840, 7085791), (3736, 5386415), (4670, 4309132), (9340, 2154566), (15173, 1326280), (18680, 1077283), (30346, 663140), (33157, 606920), (60692, 331570), (66314, 303460), (75865, 265256), (121384, 165785), (132628, 151730)]