21471945

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{727}}^1$

素因数の和:925

約数の個数: 32

約数和(自身を含む): 37739520

約数和(自身を除く): 16267575

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 179, 537, 727, 895, 1969, 2181, 2685, 3635, 5907, 7997, 9845, 10905, 23991, 29535, 39985, 119955, 130133, 390399, 650665, 1431463, 1951995, 4294389, 7157315, 21471945]

約数ペア:

[(1, 21471945), (3, 7157315), (5, 4294389), (11, 1951995), (15, 1431463), (33, 650665), (55, 390399), (165, 130133), (179, 119955), (537, 39985), (727, 29535), (895, 23991), (1969, 10905), (2181, 9845), (2685, 7997), (3635, 5907)]