20188480

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{211}}^1$

素因数の和:264

約数の個数: 112

約数和(自身を含む): 54278784

約数和(自身を除く): 34090304

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 32, 40, 46, 52, 64, 65, 80, 92, 104, 115, 130, 160, 184, 208, 211, 230, 260, 299, 320, 368, 416, 422, 460, 520, 598, 736, 832, 844, 920, 1040, 1055, 1196, 1472, 1495, 1688, 1840, 2080, 2110, 2392, 2743, 2990, 3376, 3680, 4160, 4220, 4784, 4853, 5486, 5980, 6752, 7360, 8440, 9568, 9706, 10972, 11960, 13504, 13715, 16880, 19136, 19412, 21944, 23920, 24265, 27430, 33760, 38824, 43888, 47840, 48530, 54860, 63089, 67520, 77648, 87776, 95680, 97060, 109720, 126178, 155296, 175552, 194120, 219440, 252356, 310592, 315445, 388240, 438880, 504712, 630890, 776480, 877760, 1009424, 1261780, 1552960, 2018848, 2523560, 4037696, 5047120, 10094240, 20188480]

約数ペア:

[(1, 20188480), (2, 10094240), (4, 5047120), (5, 4037696), (8, 2523560), (10, 2018848), (13, 1552960), (16, 1261780), (20, 1009424), (23, 877760), (26, 776480), (32, 630890), (40, 504712), (46, 438880), (52, 388240), (64, 315445), (65, 310592), (80, 252356), (92, 219440), (104, 194120), (115, 175552), (130, 155296), (160, 126178), (184, 109720), (208, 97060), (211, 95680), (230, 87776), (260, 77648), (299, 67520), (320, 63089), (368, 54860), (416, 48530), (422, 47840), (460, 43888), (520, 38824), (598, 33760), (736, 27430), (832, 24265), (844, 23920), (920, 21944), (1040, 19412), (1055, 19136), (1196, 16880), (1472, 13715), (1495, 13504), (1688, 11960), (1840, 10972), (2080, 9706), (2110, 9568), (2392, 8440), (2743, 7360), (2990, 6752), (3376, 5980), (3680, 5486), (4160, 4853), (4220, 4784)]