28318720

素因数分解:

$2^{10}\times 5^1\times {\mathrm{5531}}^1$

素因数の和:5556

約数の個数: 44

約数和(自身を含む): 67944024

約数和(自身を除く): 39625304

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 5120, 5531, 11062, 22124, 27655, 44248, 55310, 88496, 110620, 176992, 221240, 353984, 442480, 707968, 884960, 1415936, 1769920, 2831872, 3539840, 5663744, 7079680, 14159360, 28318720]

約数ペア:

[(1, 28318720), (2, 14159360), (4, 7079680), (5, 5663744), (8, 3539840), (10, 2831872), (16, 1769920), (20, 1415936), (32, 884960), (40, 707968), (64, 442480), (80, 353984), (128, 221240), (160, 176992), (256, 110620), (320, 88496), (512, 55310), (640, 44248), (1024, 27655), (1280, 22124), (2560, 11062), (5120, 5531)]