21172228

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{1297}}^1$

素因数の和:1372

約数の個数: 48

約数和(自身を含む): 47101824

約数和(自身を除く): 25929596

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 53, 77, 106, 154, 212, 308, 371, 583, 742, 1166, 1297, 1484, 2332, 2594, 4081, 5188, 8162, 9079, 14267, 16324, 18158, 28534, 36316, 57068, 68741, 99869, 137482, 199738, 274964, 399476, 481187, 756151, 962374, 1512302, 1924748, 3024604, 5293057, 10586114, 21172228]

約数ペア:

[(1, 21172228), (2, 10586114), (4, 5293057), (7, 3024604), (11, 1924748), (14, 1512302), (22, 962374), (28, 756151), (44, 481187), (53, 399476), (77, 274964), (106, 199738), (154, 137482), (212, 99869), (308, 68741), (371, 57068), (583, 36316), (742, 28534), (1166, 18158), (1297, 16324), (1484, 14267), (2332, 9079), (2594, 8162), (4081, 5188)]