21870080

素因数分解:

$2^9\times 5^1\times {\mathrm{8543}}^1$

素因数の和:8566

約数の個数: 40

約数和(自身を含む): 52443072

約数和(自身を除く): 30572992

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 8543, 17086, 34172, 42715, 68344, 85430, 136688, 170860, 273376, 341720, 546752, 683440, 1093504, 1366880, 2187008, 2733760, 4374016, 5467520, 10935040, 21870080]

約数ペア:

[(1, 21870080), (2, 10935040), (4, 5467520), (5, 4374016), (8, 2733760), (10, 2187008), (16, 1366880), (20, 1093504), (32, 683440), (40, 546752), (64, 341720), (80, 273376), (128, 170860), (160, 136688), (256, 85430), (320, 68344), (512, 42715), (640, 34172), (1280, 17086), (2560, 8543)]