20239120

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{211}}^1$

素因数の和:344

約数の個数: 80

約数和(自身を含む): 52050240

約数和(自身を除く): 31811120

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 109, 110, 176, 211, 218, 220, 422, 436, 440, 545, 844, 872, 880, 1055, 1090, 1199, 1688, 1744, 2110, 2180, 2321, 2398, 3376, 4220, 4360, 4642, 4796, 5995, 8440, 8720, 9284, 9592, 11605, 11990, 16880, 18568, 19184, 22999, 23210, 23980, 37136, 45998, 46420, 47960, 91996, 92840, 95920, 114995, 183992, 185680, 229990, 252989, 367984, 459980, 505978, 919960, 1011956, 1264945, 1839920, 2023912, 2529890, 4047824, 5059780, 10119560, 20239120]

約数ペア:

[(1, 20239120), (2, 10119560), (4, 5059780), (5, 4047824), (8, 2529890), (10, 2023912), (11, 1839920), (16, 1264945), (20, 1011956), (22, 919960), (40, 505978), (44, 459980), (55, 367984), (80, 252989), (88, 229990), (109, 185680), (110, 183992), (176, 114995), (211, 95920), (218, 92840), (220, 91996), (422, 47960), (436, 46420), (440, 45998), (545, 37136), (844, 23980), (872, 23210), (880, 22999), (1055, 19184), (1090, 18568), (1199, 16880), (1688, 11990), (1744, 11605), (2110, 9592), (2180, 9284), (2321, 8720), (2398, 8440), (3376, 5995), (4220, 4796), (4360, 4642)]