18042880

素因数分解:

$2^{12}\times 5^1\times {\mathrm{881}}^1$

素因数の和:910

約数の個数: 52

約数和(自身を含む): 43346772

約数和(自身を除く): 25303892

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 881, 1024, 1280, 1762, 2048, 2560, 3524, 4096, 4405, 5120, 7048, 8810, 10240, 14096, 17620, 20480, 28192, 35240, 56384, 70480, 112768, 140960, 225536, 281920, 451072, 563840, 902144, 1127680, 1804288, 2255360, 3608576, 4510720, 9021440, 18042880]

約数ペア:

[(1, 18042880), (2, 9021440), (4, 4510720), (5, 3608576), (8, 2255360), (10, 1804288), (16, 1127680), (20, 902144), (32, 563840), (40, 451072), (64, 281920), (80, 225536), (128, 140960), (160, 112768), (256, 70480), (320, 56384), (512, 35240), (640, 28192), (881, 20480), (1024, 17620), (1280, 14096), (1762, 10240), (2048, 8810), (2560, 7048), (3524, 5120), (4096, 4405)]