19900377

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1483}}^1$

素因数の和:1570

約数の個数: 32

約数和(自身を含む): 34191360

約数和(自身を除く): 14290983

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1483, 1491, 1917, 4449, 4473, 10381, 13347, 13419, 31143, 40041, 93429, 105293, 280287, 315879, 737051, 947637, 2211153, 2842911, 6633459, 19900377]

約数ペア:

[(1, 19900377), (3, 6633459), (7, 2842911), (9, 2211153), (21, 947637), (27, 737051), (63, 315879), (71, 280287), (189, 105293), (213, 93429), (497, 40041), (639, 31143), (1483, 13419), (1491, 13347), (1917, 10381), (4449, 4473)]