19893780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{79}}^1\times {\mathrm{1399}}^1$

素因数の和:1493

約数の個数: 72

約数和(自身を含む): 61152000

約数和(自身を除く): 41258220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 79, 90, 158, 180, 237, 316, 395, 474, 711, 790, 948, 1185, 1399, 1422, 1580, 2370, 2798, 2844, 3555, 4197, 4740, 5596, 6995, 7110, 8394, 12591, 13990, 14220, 16788, 20985, 25182, 27980, 41970, 50364, 62955, 83940, 110521, 125910, 221042, 251820, 331563, 442084, 552605, 663126, 994689, 1105210, 1326252, 1657815, 1989378, 2210420, 3315630, 3978756, 4973445, 6631260, 9946890, 19893780]

約数ペア:

[(1, 19893780), (2, 9946890), (3, 6631260), (4, 4973445), (5, 3978756), (6, 3315630), (9, 2210420), (10, 1989378), (12, 1657815), (15, 1326252), (18, 1105210), (20, 994689), (30, 663126), (36, 552605), (45, 442084), (60, 331563), (79, 251820), (90, 221042), (158, 125910), (180, 110521), (237, 83940), (316, 62955), (395, 50364), (474, 41970), (711, 27980), (790, 25182), (948, 20985), (1185, 16788), (1399, 14220), (1422, 13990), (1580, 12591), (2370, 8394), (2798, 7110), (2844, 6995), (3555, 5596), (4197, 4740)]