20882560

素因数分解:

$2^7\times 5^1\times {\mathrm{67}}^1\times {\mathrm{487}}^1$

素因数の和:573

約数の個数: 64

約数和(自身を含む): 50771520

約数和(自身を除く): 29888960

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 67, 80, 128, 134, 160, 268, 320, 335, 487, 536, 640, 670, 974, 1072, 1340, 1948, 2144, 2435, 2680, 3896, 4288, 4870, 5360, 7792, 8576, 9740, 10720, 15584, 19480, 21440, 31168, 32629, 38960, 42880, 62336, 65258, 77920, 130516, 155840, 163145, 261032, 311680, 326290, 522064, 652580, 1044128, 1305160, 2088256, 2610320, 4176512, 5220640, 10441280, 20882560]

約数ペア:

[(1, 20882560), (2, 10441280), (4, 5220640), (5, 4176512), (8, 2610320), (10, 2088256), (16, 1305160), (20, 1044128), (32, 652580), (40, 522064), (64, 326290), (67, 311680), (80, 261032), (128, 163145), (134, 155840), (160, 130516), (268, 77920), (320, 65258), (335, 62336), (487, 42880), (536, 38960), (640, 32629), (670, 31168), (974, 21440), (1072, 19480), (1340, 15584), (1948, 10720), (2144, 9740), (2435, 8576), (2680, 7792), (3896, 5360), (4288, 4870)]