20391120

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{223}}^1$

素因数の和:369

約数の個数: 120

約数和(自身を含む): 69328896

約数和(自身を除く): 48937776

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 127, 144, 180, 223, 240, 254, 360, 381, 446, 508, 635, 669, 720, 762, 892, 1016, 1115, 1143, 1270, 1338, 1524, 1784, 1905, 2007, 2032, 2230, 2286, 2540, 2676, 3048, 3345, 3568, 3810, 4014, 4460, 4572, 5080, 5352, 5715, 6096, 6690, 7620, 8028, 8920, 9144, 10035, 10160, 10704, 11430, 13380, 15240, 16056, 17840, 18288, 20070, 22860, 26760, 28321, 30480, 32112, 40140, 45720, 53520, 56642, 80280, 84963, 91440, 113284, 141605, 160560, 169926, 226568, 254889, 283210, 339852, 424815, 453136, 509778, 566420, 679704, 849630, 1019556, 1132840, 1274445, 1359408, 1699260, 2039112, 2265680, 2548890, 3398520, 4078224, 5097780, 6797040, 10195560, 20391120]

約数ペア:

[(1, 20391120), (2, 10195560), (3, 6797040), (4, 5097780), (5, 4078224), (6, 3398520), (8, 2548890), (9, 2265680), (10, 2039112), (12, 1699260), (15, 1359408), (16, 1274445), (18, 1132840), (20, 1019556), (24, 849630), (30, 679704), (36, 566420), (40, 509778), (45, 453136), (48, 424815), (60, 339852), (72, 283210), (80, 254889), (90, 226568), (120, 169926), (127, 160560), (144, 141605), (180, 113284), (223, 91440), (240, 84963), (254, 80280), (360, 56642), (381, 53520), (446, 45720), (508, 40140), (635, 32112), (669, 30480), (720, 28321), (762, 26760), (892, 22860), (1016, 20070), (1115, 18288), (1143, 17840), (1270, 16056), (1338, 15240), (1524, 13380), (1784, 11430), (1905, 10704), (2007, 10160), (2032, 10035), (2230, 9144), (2286, 8920), (2540, 8028), (2676, 7620), (3048, 6690), (3345, 6096), (3568, 5715), (3810, 5352), (4014, 5080), (4460, 4572)]