221512284

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{887}}^1\times {\mathrm{991}}^1$

素因数の和:1895

約数の個数: 72

約数和(自身を含む): 641292288

約数和(自身を除く): 419780004

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 887, 991, 1774, 1982, 2661, 2973, 3548, 3964, 5322, 5946, 6209, 6937, 7983, 8919, 10644, 11892, 12418, 13874, 15966, 17838, 18627, 20811, 24836, 27748, 31932, 35676, 37254, 41622, 55881, 62433, 74508, 83244, 111762, 124866, 223524, 249732, 879017, 1758034, 2637051, 3516068, 5274102, 6153119, 7911153, 10548204, 12306238, 15822306, 18459357, 24612476, 31644612, 36918714, 55378071, 73837428, 110756142, 221512284]

約数ペア:

[(1, 221512284), (2, 110756142), (3, 73837428), (4, 55378071), (6, 36918714), (7, 31644612), (9, 24612476), (12, 18459357), (14, 15822306), (18, 12306238), (21, 10548204), (28, 7911153), (36, 6153119), (42, 5274102), (63, 3516068), (84, 2637051), (126, 1758034), (252, 879017), (887, 249732), (991, 223524), (1774, 124866), (1982, 111762), (2661, 83244), (2973, 74508), (3548, 62433), (3964, 55881), (5322, 41622), (5946, 37254), (6209, 35676), (6937, 31932), (7983, 27748), (8919, 24836), (10644, 20811), (11892, 18627), (12418, 17838), (13874, 15966)]