21965955

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1$

素因数の和:268

約数の個数: 64

約数和(自身を含む): 41803776

約数和(自身を除く): 19837821

約数列:

[1, 3, 5, 11, 15, 17, 33, 41, 51, 55, 85, 123, 165, 187, 191, 205, 255, 451, 561, 573, 615, 697, 935, 955, 1353, 2091, 2101, 2255, 2805, 2865, 3247, 3485, 6303, 6765, 7667, 7831, 9741, 10455, 10505, 16235, 23001, 23493, 31515, 35717, 38335, 39155, 48705, 86141, 107151, 115005, 117465, 133127, 178585, 258423, 399381, 430705, 535755, 665635, 1292115, 1464397, 1996905, 4393191, 7321985, 21965955]

約数ペア:

[(1, 21965955), (3, 7321985), (5, 4393191), (11, 1996905), (15, 1464397), (17, 1292115), (33, 665635), (41, 535755), (51, 430705), (55, 399381), (85, 258423), (123, 178585), (165, 133127), (187, 117465), (191, 115005), (205, 107151), (255, 86141), (451, 48705), (561, 39155), (573, 38335), (615, 35717), (697, 31515), (935, 23493), (955, 23001), (1353, 16235), (2091, 10505), (2101, 10455), (2255, 9741), (2805, 7831), (2865, 7667), (3247, 6765), (3485, 6303)]