19709440

素因数分解:

$2^9\times 5^1\times {\mathrm{7699}}^1$

素因数の和:7722

約数の個数: 40

約数和(自身を含む): 47262600

約数和(自身を除く): 27553160

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7699, 15398, 30796, 38495, 61592, 76990, 123184, 153980, 246368, 307960, 492736, 615920, 985472, 1231840, 1970944, 2463680, 3941888, 4927360, 9854720, 19709440]

約数ペア:

[(1, 19709440), (2, 9854720), (4, 4927360), (5, 3941888), (8, 2463680), (10, 1970944), (16, 1231840), (20, 985472), (32, 615920), (40, 492736), (64, 307960), (80, 246368), (128, 153980), (160, 123184), (256, 76990), (320, 61592), (512, 38495), (640, 30796), (1280, 15398), (2560, 7699)]