18203520

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{499}}^1$

素因数の和:540

約数の個数: 128

約数和(自身を含む): 61200000

約数和(自身を除く): 42996480

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 19, 20, 24, 30, 32, 38, 40, 48, 57, 60, 64, 76, 80, 95, 96, 114, 120, 128, 152, 160, 190, 192, 228, 240, 285, 304, 320, 380, 384, 456, 480, 499, 570, 608, 640, 760, 912, 960, 998, 1140, 1216, 1497, 1520, 1824, 1920, 1996, 2280, 2432, 2495, 2994, 3040, 3648, 3992, 4560, 4990, 5988, 6080, 7296, 7485, 7984, 9120, 9481, 9980, 11976, 12160, 14970, 15968, 18240, 18962, 19960, 23952, 28443, 29940, 31936, 36480, 37924, 39920, 47405, 47904, 56886, 59880, 63872, 75848, 79840, 94810, 95808, 113772, 119760, 142215, 151696, 159680, 189620, 191616, 227544, 239520, 284430, 303392, 319360, 379240, 455088, 479040, 568860, 606784, 758480, 910176, 958080, 1137720, 1213568, 1516960, 1820352, 2275440, 3033920, 3640704, 4550880, 6067840, 9101760, 18203520]

約数ペア:

[(1, 18203520), (2, 9101760), (3, 6067840), (4, 4550880), (5, 3640704), (6, 3033920), (8, 2275440), (10, 1820352), (12, 1516960), (15, 1213568), (16, 1137720), (19, 958080), (20, 910176), (24, 758480), (30, 606784), (32, 568860), (38, 479040), (40, 455088), (48, 379240), (57, 319360), (60, 303392), (64, 284430), (76, 239520), (80, 227544), (95, 191616), (96, 189620), (114, 159680), (120, 151696), (128, 142215), (152, 119760), (160, 113772), (190, 95808), (192, 94810), (228, 79840), (240, 75848), (285, 63872), (304, 59880), (320, 56886), (380, 47904), (384, 47405), (456, 39920), (480, 37924), (499, 36480), (570, 31936), (608, 29940), (640, 28443), (760, 23952), (912, 19960), (960, 18962), (998, 18240), (1140, 15968), (1216, 14970), (1497, 12160), (1520, 11976), (1824, 9980), (1920, 9481), (1996, 9120), (2280, 7984), (2432, 7485), (2495, 7296), (2994, 6080), (3040, 5988), (3648, 4990), (3992, 4560)]