257923840

素因数分解:

$2^8\times 5^1\times {\mathrm{23}}^1\times {\mathrm{8761}}^1$

素因数の和:8805

約数の個数: 72

約数和(自身を含む): 644743008

約数和(自身を除く): 386819168

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 256, 320, 368, 460, 640, 736, 920, 1280, 1472, 1840, 2944, 3680, 5888, 7360, 8761, 14720, 17522, 29440, 35044, 43805, 70088, 87610, 140176, 175220, 201503, 280352, 350440, 403006, 560704, 700880, 806012, 1007515, 1121408, 1401760, 1612024, 2015030, 2242816, 2803520, 3224048, 4030060, 5607040, 6448096, 8060120, 11214080, 12896192, 16120240, 25792384, 32240480, 51584768, 64480960, 128961920, 257923840]

約数ペア:

[(1, 257923840), (2, 128961920), (4, 64480960), (5, 51584768), (8, 32240480), (10, 25792384), (16, 16120240), (20, 12896192), (23, 11214080), (32, 8060120), (40, 6448096), (46, 5607040), (64, 4030060), (80, 3224048), (92, 2803520), (115, 2242816), (128, 2015030), (160, 1612024), (184, 1401760), (230, 1121408), (256, 1007515), (320, 806012), (368, 700880), (460, 560704), (640, 403006), (736, 350440), (920, 280352), (1280, 201503), (1472, 175220), (1840, 140176), (2944, 87610), (3680, 70088), (5888, 43805), (7360, 35044), (8761, 29440), (14720, 17522)]