21700965

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{151}}^1$

素因数の和:250

約数の個数: 64

約数和(自身を含む): 41674752

約数和(自身を除く): 19973787

約数列:

[1, 3, 5, 11, 13, 15, 33, 39, 55, 65, 67, 143, 151, 165, 195, 201, 335, 429, 453, 715, 737, 755, 871, 1005, 1661, 1963, 2145, 2211, 2265, 2613, 3685, 4355, 4983, 5889, 8305, 9581, 9815, 10117, 11055, 13065, 21593, 24915, 28743, 29445, 30351, 47905, 50585, 64779, 107965, 111287, 131521, 143715, 151755, 323895, 333861, 394563, 556435, 657605, 1446731, 1669305, 1972815, 4340193, 7233655, 21700965]

約数ペア:

[(1, 21700965), (3, 7233655), (5, 4340193), (11, 1972815), (13, 1669305), (15, 1446731), (33, 657605), (39, 556435), (55, 394563), (65, 333861), (67, 323895), (143, 151755), (151, 143715), (165, 131521), (195, 111287), (201, 107965), (335, 64779), (429, 50585), (453, 47905), (715, 30351), (737, 29445), (755, 28743), (871, 24915), (1005, 21593), (1661, 13065), (1963, 11055), (2145, 10117), (2211, 9815), (2265, 9581), (2613, 8305), (3685, 5889), (4355, 4983)]