21889280

素因数分解:

$2^8\times 5^1\times 7^2\times {\mathrm{349}}^1$

素因数の和:384

約数の個数: 108

約数和(自身を含む): 61166700

約数和(自身を除く): 39277420

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 64, 70, 80, 98, 112, 128, 140, 160, 196, 224, 245, 256, 280, 320, 349, 392, 448, 490, 560, 640, 698, 784, 896, 980, 1120, 1280, 1396, 1568, 1745, 1792, 1960, 2240, 2443, 2792, 3136, 3490, 3920, 4480, 4886, 5584, 6272, 6980, 7840, 8960, 9772, 11168, 12215, 12544, 13960, 15680, 17101, 19544, 22336, 24430, 27920, 31360, 34202, 39088, 44672, 48860, 55840, 62720, 68404, 78176, 85505, 89344, 97720, 111680, 136808, 156352, 171010, 195440, 223360, 273616, 312704, 342020, 390880, 446720, 547232, 625408, 684040, 781760, 1094464, 1368080, 1563520, 2188928, 2736160, 3127040, 4377856, 5472320, 10944640, 21889280]

約数ペア:

[(1, 21889280), (2, 10944640), (4, 5472320), (5, 4377856), (7, 3127040), (8, 2736160), (10, 2188928), (14, 1563520), (16, 1368080), (20, 1094464), (28, 781760), (32, 684040), (35, 625408), (40, 547232), (49, 446720), (56, 390880), (64, 342020), (70, 312704), (80, 273616), (98, 223360), (112, 195440), (128, 171010), (140, 156352), (160, 136808), (196, 111680), (224, 97720), (245, 89344), (256, 85505), (280, 78176), (320, 68404), (349, 62720), (392, 55840), (448, 48860), (490, 44672), (560, 39088), (640, 34202), (698, 31360), (784, 27920), (896, 24430), (980, 22336), (1120, 19544), (1280, 17101), (1396, 15680), (1568, 13960), (1745, 12544), (1792, 12215), (1960, 11168), (2240, 9772), (2443, 8960), (2792, 7840), (3136, 6980), (3490, 6272), (3920, 5584), (4480, 4886)]