21988554

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{2579}}^1$

素因数の和:2627

約数の個数: 48

約数和(自身を含む): 52941600

約数和(自身を除く): 30953046

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 42, 49, 58, 87, 98, 147, 174, 203, 294, 406, 609, 1218, 1421, 2579, 2842, 4263, 5158, 7737, 8526, 15474, 18053, 36106, 54159, 74791, 108318, 126371, 149582, 224373, 252742, 379113, 448746, 523537, 758226, 1047074, 1570611, 3141222, 3664759, 7329518, 10994277, 21988554]

約数ペア:

[(1, 21988554), (2, 10994277), (3, 7329518), (6, 3664759), (7, 3141222), (14, 1570611), (21, 1047074), (29, 758226), (42, 523537), (49, 448746), (58, 379113), (87, 252742), (98, 224373), (147, 149582), (174, 126371), (203, 108318), (294, 74791), (406, 54159), (609, 36106), (1218, 18053), (1421, 15474), (2579, 8526), (2842, 7737), (4263, 5158)]