21281328

素因数分解:

$2^4\times 3^2\times {\mathrm{147787}}^1$

素因数の和:147801

約数の個数: 30

約数和(自身を含む): 59558564

約数和(自身を除く): 38277236

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 147787, 295574, 443361, 591148, 886722, 1182296, 1330083, 1773444, 2364592, 2660166, 3546888, 5320332, 7093776, 10640664, 21281328]

約数ペア:

[(1, 21281328), (2, 10640664), (3, 7093776), (4, 5320332), (6, 3546888), (8, 2660166), (9, 2364592), (12, 1773444), (16, 1330083), (18, 1182296), (24, 886722), (36, 591148), (48, 443361), (72, 295574), (144, 147787)]