21351990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{727}}^1$

素因数の和:837

約数の個数: 64

約数和(自身を含む): 56609280

約数和(自身を除く): 35257290

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 89, 110, 165, 178, 267, 330, 445, 534, 727, 890, 979, 1335, 1454, 1958, 2181, 2670, 2937, 3635, 4362, 4895, 5874, 7270, 7997, 9790, 10905, 14685, 15994, 21810, 23991, 29370, 39985, 47982, 64703, 79970, 119955, 129406, 194109, 239910, 323515, 388218, 647030, 711733, 970545, 1423466, 1941090, 2135199, 3558665, 4270398, 7117330, 10675995, 21351990]

約数ペア:

[(1, 21351990), (2, 10675995), (3, 7117330), (5, 4270398), (6, 3558665), (10, 2135199), (11, 1941090), (15, 1423466), (22, 970545), (30, 711733), (33, 647030), (55, 388218), (66, 323515), (89, 239910), (110, 194109), (165, 129406), (178, 119955), (267, 79970), (330, 64703), (445, 47982), (534, 39985), (727, 29370), (890, 23991), (979, 21810), (1335, 15994), (1454, 14685), (1958, 10905), (2181, 9790), (2670, 7997), (2937, 7270), (3635, 5874), (4362, 4895)]