19181988

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{25373}}^1$

素因数の和:25393

約数の個数: 48

約数和(自身を含む): 56837760

約数和(自身を除く): 37655772

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 27, 28, 36, 42, 54, 63, 84, 108, 126, 189, 252, 378, 756, 25373, 50746, 76119, 101492, 152238, 177611, 228357, 304476, 355222, 456714, 532833, 685071, 710444, 913428, 1065666, 1370142, 1598499, 2131332, 2740284, 3196998, 4795497, 6393996, 9590994, 19181988]

約数ペア:

[(1, 19181988), (2, 9590994), (3, 6393996), (4, 4795497), (6, 3196998), (7, 2740284), (9, 2131332), (12, 1598499), (14, 1370142), (18, 1065666), (21, 913428), (27, 710444), (28, 685071), (36, 532833), (42, 456714), (54, 355222), (63, 304476), (84, 228357), (108, 177611), (126, 152238), (189, 101492), (252, 76119), (378, 50746), (756, 25373)]