20571200

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1$

素因数の和:101

約数の個数: 168

約数和(自身を含む): 58204608

約数和(自身を除く): 37633408

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 25, 26, 32, 40, 43, 46, 50, 52, 64, 65, 80, 86, 92, 100, 104, 115, 130, 160, 172, 184, 200, 208, 215, 230, 260, 299, 320, 325, 344, 368, 400, 416, 430, 460, 520, 559, 575, 598, 650, 688, 736, 800, 832, 860, 920, 989, 1040, 1075, 1118, 1150, 1196, 1300, 1376, 1472, 1495, 1600, 1720, 1840, 1978, 2080, 2150, 2236, 2300, 2392, 2600, 2752, 2795, 2990, 3440, 3680, 3956, 4160, 4300, 4472, 4600, 4784, 4945, 5200, 5590, 5980, 6880, 7360, 7475, 7912, 8600, 8944, 9200, 9568, 9890, 10400, 11180, 11960, 12857, 13760, 13975, 14950, 15824, 17200, 17888, 18400, 19136, 19780, 20800, 22360, 23920, 24725, 25714, 27950, 29900, 31648, 34400, 35776, 36800, 39560, 44720, 47840, 49450, 51428, 55900, 59800, 63296, 64285, 68800, 79120, 89440, 95680, 98900, 102856, 111800, 119600, 128570, 158240, 178880, 197800, 205712, 223600, 239200, 257140, 316480, 321425, 395600, 411424, 447200, 478400, 514280, 642850, 791200, 822848, 894400, 1028560, 1285700, 1582400, 2057120, 2571400, 4114240, 5142800, 10285600, 20571200]

約数ペア:

[(1, 20571200), (2, 10285600), (4, 5142800), (5, 4114240), (8, 2571400), (10, 2057120), (13, 1582400), (16, 1285700), (20, 1028560), (23, 894400), (25, 822848), (26, 791200), (32, 642850), (40, 514280), (43, 478400), (46, 447200), (50, 411424), (52, 395600), (64, 321425), (65, 316480), (80, 257140), (86, 239200), (92, 223600), (100, 205712), (104, 197800), (115, 178880), (130, 158240), (160, 128570), (172, 119600), (184, 111800), (200, 102856), (208, 98900), (215, 95680), (230, 89440), (260, 79120), (299, 68800), (320, 64285), (325, 63296), (344, 59800), (368, 55900), (400, 51428), (416, 49450), (430, 47840), (460, 44720), (520, 39560), (559, 36800), (575, 35776), (598, 34400), (650, 31648), (688, 29900), (736, 27950), (800, 25714), (832, 24725), (860, 23920), (920, 22360), (989, 20800), (1040, 19780), (1075, 19136), (1118, 18400), (1150, 17888), (1196, 17200), (1300, 15824), (1376, 14950), (1472, 13975), (1495, 13760), (1600, 12857), (1720, 11960), (1840, 11180), (1978, 10400), (2080, 9890), (2150, 9568), (2236, 9200), (2300, 8944), (2392, 8600), (2600, 7912), (2752, 7475), (2795, 7360), (2990, 6880), (3440, 5980), (3680, 5590), (3956, 5200), (4160, 4945), (4300, 4784), (4472, 4600)]