21961128

素因数分解:

$2^3\times 3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{3533}}^1$

素因数の和:3586

約数の個数: 64

約数和(自身を含む): 64460160

約数和(自身を除く): 42499032

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 37, 42, 56, 74, 84, 111, 148, 168, 222, 259, 296, 444, 518, 777, 888, 1036, 1554, 2072, 3108, 3533, 6216, 7066, 10599, 14132, 21198, 24731, 28264, 42396, 49462, 74193, 84792, 98924, 130721, 148386, 197848, 261442, 296772, 392163, 522884, 593544, 784326, 915047, 1045768, 1568652, 1830094, 2745141, 3137304, 3660188, 5490282, 7320376, 10980564, 21961128]

約数ペア:

[(1, 21961128), (2, 10980564), (3, 7320376), (4, 5490282), (6, 3660188), (7, 3137304), (8, 2745141), (12, 1830094), (14, 1568652), (21, 1045768), (24, 915047), (28, 784326), (37, 593544), (42, 522884), (56, 392163), (74, 296772), (84, 261442), (111, 197848), (148, 148386), (168, 130721), (222, 98924), (259, 84792), (296, 74193), (444, 49462), (518, 42396), (777, 28264), (888, 24731), (1036, 21198), (1554, 14132), (2072, 10599), (3108, 7066), (3533, 6216)]