19688960

素因数分解:

$2^9\times 5^1\times {\mathrm{7691}}^1$

素因数の和:7714

約数の個数: 40

約数和(自身を含む): 47213496

約数和(自身を除く): 27524536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7691, 15382, 30764, 38455, 61528, 76910, 123056, 153820, 246112, 307640, 492224, 615280, 984448, 1230560, 1968896, 2461120, 3937792, 4922240, 9844480, 19688960]

約数ペア:

[(1, 19688960), (2, 9844480), (4, 4922240), (5, 3937792), (8, 2461120), (10, 1968896), (16, 1230560), (20, 984448), (32, 615280), (40, 492224), (64, 307640), (80, 246112), (128, 153820), (160, 123056), (256, 76910), (320, 61528), (512, 38455), (640, 30764), (1280, 15382), (2560, 7691)]