12720736

素因数分解:

$2^5\times 7^1\times {\mathrm{109}}^1\times {\mathrm{521}}^1$

素因数の和:647

約数の個数: 48

約数和(自身を含む): 28939680

約数和(自身を除く): 16218944

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 109, 112, 218, 224, 436, 521, 763, 872, 1042, 1526, 1744, 2084, 3052, 3488, 3647, 4168, 6104, 7294, 8336, 12208, 14588, 16672, 24416, 29176, 56789, 58352, 113578, 116704, 227156, 397523, 454312, 795046, 908624, 1590092, 1817248, 3180184, 6360368, 12720736]

約数ペア:

[(1, 12720736), (2, 6360368), (4, 3180184), (7, 1817248), (8, 1590092), (14, 908624), (16, 795046), (28, 454312), (32, 397523), (56, 227156), (109, 116704), (112, 113578), (218, 58352), (224, 56789), (436, 29176), (521, 24416), (763, 16672), (872, 14588), (1042, 12208), (1526, 8336), (1744, 7294), (2084, 6104), (3052, 4168), (3488, 3647)]