21230080

素因数分解:

$2^9\times 5^1\times {\mathrm{8293}}^1$

素因数の和:8316

約数の個数: 40

約数和(自身を含む): 50908572

約数和(自身を除く): 29678492

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 8293, 16586, 33172, 41465, 66344, 82930, 132688, 165860, 265376, 331720, 530752, 663440, 1061504, 1326880, 2123008, 2653760, 4246016, 5307520, 10615040, 21230080]

約数ペア:

[(1, 21230080), (2, 10615040), (4, 5307520), (5, 4246016), (8, 2653760), (10, 2123008), (16, 1326880), (20, 1061504), (32, 663440), (40, 530752), (64, 331720), (80, 265376), (128, 165860), (160, 132688), (256, 82930), (320, 66344), (512, 41465), (640, 33172), (1280, 16586), (2560, 8293)]