20063890

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{367}}^1$

素因数の和:463

約数の個数: 64

約数和(自身を含む): 45785088

約数和(自身を除く): 25721198

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 71, 77, 110, 142, 154, 355, 367, 385, 497, 710, 734, 770, 781, 994, 1562, 1835, 2485, 2569, 3670, 3905, 4037, 4970, 5138, 5467, 7810, 8074, 10934, 12845, 20185, 25690, 26057, 27335, 28259, 40370, 52114, 54670, 56518, 130285, 141295, 182399, 260570, 282590, 286627, 364798, 573254, 911995, 1433135, 1823990, 2006389, 2866270, 4012778, 10031945, 20063890]

約数ペア:

[(1, 20063890), (2, 10031945), (5, 4012778), (7, 2866270), (10, 2006389), (11, 1823990), (14, 1433135), (22, 911995), (35, 573254), (55, 364798), (70, 286627), (71, 282590), (77, 260570), (110, 182399), (142, 141295), (154, 130285), (355, 56518), (367, 54670), (385, 52114), (497, 40370), (710, 28259), (734, 27335), (770, 26057), (781, 25690), (994, 20185), (1562, 12845), (1835, 10934), (2485, 8074), (2569, 7810), (3670, 5467), (3905, 5138), (4037, 4970)]