20605578

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{109}}^1\times {\mathrm{643}}^1$

素因数の和:771

約数の個数: 48

約数和(自身を含む): 48454560

約数和(自身を除く): 27848982

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 109, 147, 218, 294, 327, 643, 654, 763, 1286, 1526, 1929, 2289, 3858, 4501, 4578, 5341, 9002, 10682, 13503, 16023, 27006, 31507, 32046, 63014, 70087, 94521, 140174, 189042, 210261, 420522, 490609, 981218, 1471827, 2943654, 3434263, 6868526, 10302789, 20605578]

約数ペア:

[(1, 20605578), (2, 10302789), (3, 6868526), (6, 3434263), (7, 2943654), (14, 1471827), (21, 981218), (42, 490609), (49, 420522), (98, 210261), (109, 189042), (147, 140174), (218, 94521), (294, 70087), (327, 63014), (643, 32046), (654, 31507), (763, 27006), (1286, 16023), (1526, 13503), (1929, 10682), (2289, 9002), (3858, 5341), (4501, 4578)]