21118080

素因数分解:

$2^7\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{647}}^1$

素因数の和:686

約数の個数: 128

約数和(自身を含む): 71383680

約数和(自身を除く): 50265600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 128, 136, 160, 170, 192, 204, 240, 255, 272, 320, 340, 384, 408, 480, 510, 544, 640, 647, 680, 816, 960, 1020, 1088, 1294, 1360, 1632, 1920, 1941, 2040, 2176, 2588, 2720, 3235, 3264, 3882, 4080, 5176, 5440, 6470, 6528, 7764, 8160, 9705, 10352, 10880, 10999, 12940, 15528, 16320, 19410, 20704, 21998, 25880, 31056, 32640, 32997, 38820, 41408, 43996, 51760, 54995, 62112, 65994, 77640, 82816, 87992, 103520, 109990, 124224, 131988, 155280, 164985, 175984, 207040, 219980, 248448, 263976, 310560, 329970, 351968, 414080, 439960, 527952, 621120, 659940, 703936, 879920, 1055904, 1242240, 1319880, 1407872, 1759840, 2111808, 2639760, 3519680, 4223616, 5279520, 7039360, 10559040, 21118080]

約数ペア:

[(1, 21118080), (2, 10559040), (3, 7039360), (4, 5279520), (5, 4223616), (6, 3519680), (8, 2639760), (10, 2111808), (12, 1759840), (15, 1407872), (16, 1319880), (17, 1242240), (20, 1055904), (24, 879920), (30, 703936), (32, 659940), (34, 621120), (40, 527952), (48, 439960), (51, 414080), (60, 351968), (64, 329970), (68, 310560), (80, 263976), (85, 248448), (96, 219980), (102, 207040), (120, 175984), (128, 164985), (136, 155280), (160, 131988), (170, 124224), (192, 109990), (204, 103520), (240, 87992), (255, 82816), (272, 77640), (320, 65994), (340, 62112), (384, 54995), (408, 51760), (480, 43996), (510, 41408), (544, 38820), (640, 32997), (647, 32640), (680, 31056), (816, 25880), (960, 21998), (1020, 20704), (1088, 19410), (1294, 16320), (1360, 15528), (1632, 12940), (1920, 10999), (1941, 10880), (2040, 10352), (2176, 9705), (2588, 8160), (2720, 7764), (3235, 6528), (3264, 6470), (3882, 5440), (4080, 5176)]