21365272

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{367}}^1\times {\mathrm{383}}^1$

素因数の和:775

約数の個数: 32

約数和(自身を含む): 42393600

約数和(自身を除く): 21028328

約数列:

[1, 2, 4, 8, 19, 38, 76, 152, 367, 383, 734, 766, 1468, 1532, 2936, 3064, 6973, 7277, 13946, 14554, 27892, 29108, 55784, 58216, 140561, 281122, 562244, 1124488, 2670659, 5341318, 10682636, 21365272]

約数ペア:

[(1, 21365272), (2, 10682636), (4, 5341318), (8, 2670659), (19, 1124488), (38, 562244), (76, 281122), (152, 140561), (367, 58216), (383, 55784), (734, 29108), (766, 27892), (1468, 14554), (1532, 13946), (2936, 7277), (3064, 6973)]