21270466

素因数分解:

$2^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{397}}^1$

素因数の和:538

約数の個数: 32

約数和(自身を含む): 37825920

約数和(自身を除く): 16555454

約数列:

[1, 2, 7, 14, 43, 86, 89, 178, 301, 397, 602, 623, 794, 1246, 2779, 3827, 5558, 7654, 17071, 26789, 34142, 35333, 53578, 70666, 119497, 238994, 247331, 494662, 1519319, 3038638, 10635233, 21270466]

約数ペア:

[(1, 21270466), (2, 10635233), (7, 3038638), (14, 1519319), (43, 494662), (86, 247331), (89, 238994), (178, 119497), (301, 70666), (397, 53578), (602, 35333), (623, 34142), (794, 26789), (1246, 17071), (2779, 7654), (3827, 5558)]