21249195

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1447}}^1$

素因数の和:1555

約数の個数: 32

約数和(自身を含む): 37532160

約数和(自身を除く): 16282965

約数列:

[1, 3, 5, 11, 15, 33, 55, 89, 165, 267, 445, 979, 1335, 1447, 2937, 4341, 4895, 7235, 14685, 15917, 21705, 47751, 79585, 128783, 238755, 386349, 643915, 1416613, 1931745, 4249839, 7083065, 21249195]

約数ペア:

[(1, 21249195), (3, 7083065), (5, 4249839), (11, 1931745), (15, 1416613), (33, 643915), (55, 386349), (89, 238755), (165, 128783), (267, 79585), (445, 47751), (979, 21705), (1335, 15917), (1447, 14685), (2937, 7235), (4341, 4895)]