19980922

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{197}}^1$

素因数の和:342

約数の個数: 32

約数和(自身を含む): 33530112

約数和(自身を除く): 13549190

約数列:

[1, 2, 13, 26, 47, 83, 94, 166, 197, 394, 611, 1079, 1222, 2158, 2561, 3901, 5122, 7802, 9259, 16351, 18518, 32702, 50713, 101426, 120367, 212563, 240734, 425126, 768497, 1536994, 9990461, 19980922]

約数ペア:

[(1, 19980922), (2, 9990461), (13, 1536994), (26, 768497), (47, 425126), (83, 240734), (94, 212563), (166, 120367), (197, 101426), (394, 50713), (611, 32702), (1079, 18518), (1222, 16351), (2158, 9259), (2561, 7802), (3901, 5122)]