19865880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{397}}^1$

素因数の和:553

約数の個数: 96

約数和(自身を含む): 65192400

約数和(自身を除く): 45326520

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 30, 36, 40, 45, 60, 72, 90, 120, 139, 180, 278, 360, 397, 417, 556, 695, 794, 834, 1112, 1191, 1251, 1390, 1588, 1668, 1985, 2085, 2382, 2502, 2780, 3176, 3336, 3573, 3970, 4170, 4764, 5004, 5560, 5955, 6255, 7146, 7940, 8340, 9528, 10008, 11910, 12510, 14292, 15880, 16680, 17865, 23820, 25020, 28584, 35730, 47640, 50040, 55183, 71460, 110366, 142920, 165549, 220732, 275915, 331098, 441464, 496647, 551830, 662196, 827745, 993294, 1103660, 1324392, 1655490, 1986588, 2207320, 2483235, 3310980, 3973176, 4966470, 6621960, 9932940, 19865880]

約数ペア:

[(1, 19865880), (2, 9932940), (3, 6621960), (4, 4966470), (5, 3973176), (6, 3310980), (8, 2483235), (9, 2207320), (10, 1986588), (12, 1655490), (15, 1324392), (18, 1103660), (20, 993294), (24, 827745), (30, 662196), (36, 551830), (40, 496647), (45, 441464), (60, 331098), (72, 275915), (90, 220732), (120, 165549), (139, 142920), (180, 110366), (278, 71460), (360, 55183), (397, 50040), (417, 47640), (556, 35730), (695, 28584), (794, 25020), (834, 23820), (1112, 17865), (1191, 16680), (1251, 15880), (1390, 14292), (1588, 12510), (1668, 11910), (1985, 10008), (2085, 9528), (2382, 8340), (2502, 7940), (2780, 7146), (3176, 6255), (3336, 5955), (3573, 5560), (3970, 5004), (4170, 4764)]