20862080

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{881}}^1$

素因数の和:937

約数の個数: 64

約数和(自身を含む): 51279480

約数和(自身を除く): 30417400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 296, 320, 370, 592, 640, 740, 881, 1184, 1480, 1762, 2368, 2960, 3524, 4405, 4736, 5920, 7048, 8810, 11840, 14096, 17620, 23680, 28192, 32597, 35240, 56384, 65194, 70480, 112768, 130388, 140960, 162985, 260776, 281920, 325970, 521552, 563840, 651940, 1043104, 1303880, 2086208, 2607760, 4172416, 5215520, 10431040, 20862080]

約数ペア:

[(1, 20862080), (2, 10431040), (4, 5215520), (5, 4172416), (8, 2607760), (10, 2086208), (16, 1303880), (20, 1043104), (32, 651940), (37, 563840), (40, 521552), (64, 325970), (74, 281920), (80, 260776), (128, 162985), (148, 140960), (160, 130388), (185, 112768), (296, 70480), (320, 65194), (370, 56384), (592, 35240), (640, 32597), (740, 28192), (881, 23680), (1184, 17620), (1480, 14096), (1762, 11840), (2368, 8810), (2960, 7048), (3524, 5920), (4405, 4736)]