21515688

素因数分解:

$2^3\times 3^2\times {\mathrm{151}}^1\times {\mathrm{1979}}^1$

素因数の和:2142

約数の個数: 48

約数和(自身を含む): 58687200

約数和(自身を除く): 37171512

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 151, 302, 453, 604, 906, 1208, 1359, 1812, 1979, 2718, 3624, 3958, 5436, 5937, 7916, 10872, 11874, 15832, 17811, 23748, 35622, 47496, 71244, 142488, 298829, 597658, 896487, 1195316, 1792974, 2390632, 2689461, 3585948, 5378922, 7171896, 10757844, 21515688]

約数ペア:

[(1, 21515688), (2, 10757844), (3, 7171896), (4, 5378922), (6, 3585948), (8, 2689461), (9, 2390632), (12, 1792974), (18, 1195316), (24, 896487), (36, 597658), (72, 298829), (151, 142488), (302, 71244), (453, 47496), (604, 35622), (906, 23748), (1208, 17811), (1359, 15832), (1812, 11874), (1979, 10872), (2718, 7916), (3624, 5937), (3958, 5436)]