20749630768

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{319343}}^1$

素因数の和:319513

約数の個数: 40

約数和(自身を含む): 41816180736

約数和(自身を除く): 21066549968

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 131, 248, 262, 496, 524, 1048, 2096, 4061, 8122, 16244, 32488, 64976, 319343, 638686, 1277372, 2554744, 5109488, 9899633, 19799266, 39598532, 41833933, 79197064, 83667866, 158394128, 167335732, 334671464, 669342928, 1296851923, 2593703846, 5187407692, 10374815384, 20749630768]

約数ペア:

[(1, 20749630768), (2, 10374815384), (4, 5187407692), (8, 2593703846), (16, 1296851923), (31, 669342928), (62, 334671464), (124, 167335732), (131, 158394128), (248, 83667866), (262, 79197064), (496, 41833933), (524, 39598532), (1048, 19799266), (2096, 9899633), (4061, 5109488), (8122, 2554744), (16244, 1277372), (32488, 638686), (64976, 319343)]