18885760

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1283}}^1$

素因数の和:1325

約数の個数: 64

約数和(自身を含む): 47148480

約数和(自身を除く): 28262720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1283, 1472, 1840, 2566, 2944, 3680, 5132, 6415, 7360, 10264, 12830, 14720, 20528, 25660, 29509, 41056, 51320, 59018, 82112, 102640, 118036, 147545, 164224, 205280, 236072, 295090, 410560, 472144, 590180, 821120, 944288, 1180360, 1888576, 2360720, 3777152, 4721440, 9442880, 18885760]

約数ペア:

[(1, 18885760), (2, 9442880), (4, 4721440), (5, 3777152), (8, 2360720), (10, 1888576), (16, 1180360), (20, 944288), (23, 821120), (32, 590180), (40, 472144), (46, 410560), (64, 295090), (80, 236072), (92, 205280), (115, 164224), (128, 147545), (160, 118036), (184, 102640), (230, 82112), (320, 59018), (368, 51320), (460, 41056), (640, 29509), (736, 25660), (920, 20528), (1283, 14720), (1472, 12830), (1840, 10264), (2566, 7360), (2944, 6415), (3680, 5132)]