20728320

素因数分解:

$2^9\times 3^1\times 5^1\times {\mathrm{2699}}^1$

素因数の和:2725

約数の個数: 80

約数和(自身を含む): 66290400

約数和(自身を除く): 45562080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 64, 80, 96, 120, 128, 160, 192, 240, 256, 320, 384, 480, 512, 640, 768, 960, 1280, 1536, 1920, 2560, 2699, 3840, 5398, 7680, 8097, 10796, 13495, 16194, 21592, 26990, 32388, 40485, 43184, 53980, 64776, 80970, 86368, 107960, 129552, 161940, 172736, 215920, 259104, 323880, 345472, 431840, 518208, 647760, 690944, 863680, 1036416, 1295520, 1381888, 1727360, 2072832, 2591040, 3454720, 4145664, 5182080, 6909440, 10364160, 20728320]

約数ペア:

[(1, 20728320), (2, 10364160), (3, 6909440), (4, 5182080), (5, 4145664), (6, 3454720), (8, 2591040), (10, 2072832), (12, 1727360), (15, 1381888), (16, 1295520), (20, 1036416), (24, 863680), (30, 690944), (32, 647760), (40, 518208), (48, 431840), (60, 345472), (64, 323880), (80, 259104), (96, 215920), (120, 172736), (128, 161940), (160, 129552), (192, 107960), (240, 86368), (256, 80970), (320, 64776), (384, 53980), (480, 43184), (512, 40485), (640, 32388), (768, 26990), (960, 21592), (1280, 16194), (1536, 13495), (1920, 10796), (2560, 8097), (2699, 7680), (3840, 5398)]