261639393405

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{491}}^1\times {\mathrm{977}}^1\times {\mathrm{2797}}^1$

素因数の和:4286

約数の個数: 64

約数和(自身を含む): 452367030528

約数和(自身を除く): 190727637123

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 491, 977, 1473, 2455, 2797, 2931, 4885, 6383, 7365, 8391, 12701, 13985, 14655, 19149, 31915, 36361, 38103, 41955, 63505, 95745, 109083, 181805, 190515, 479707, 545415, 1373327, 1439121, 2398535, 2732669, 4119981, 6236191, 6866635, 7195605, 8198007, 13663345, 17853251, 18708573, 20599905, 31180955, 35524697, 40990035, 53559753, 89266255, 93542865, 106574091, 177623485, 267798765, 532870455, 1341740479, 4025221437, 6708702395, 17442626227, 20126107185, 52327878681, 87213131135, 261639393405]

約数ペア:

[(1, 261639393405), (3, 87213131135), (5, 52327878681), (13, 20126107185), (15, 17442626227), (39, 6708702395), (65, 4025221437), (195, 1341740479), (491, 532870455), (977, 267798765), (1473, 177623485), (2455, 106574091), (2797, 93542865), (2931, 89266255), (4885, 53559753), (6383, 40990035), (7365, 35524697), (8391, 31180955), (12701, 20599905), (13985, 18708573), (14655, 17853251), (19149, 13663345), (31915, 8198007), (36361, 7195605), (38103, 6866635), (41955, 6236191), (63505, 4119981), (95745, 2732669), (109083, 2398535), (181805, 1439121), (190515, 1373327), (479707, 545415)]