20391.000000

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{103}}^1$

素因数の和:129

約数の個数: 48

約数和(自身を含む): 464256

約数和(自身を除く): 294306

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 25, 30, 33, 50, 55, 66, 75, 103, 110, 150, 165, 206, 275, 309, 330, 515, 550, 618, 825, 1030, 1133, 1545, 1650, 2266, 2575, 3090, 3399, 5150, 5665, 6798, 7725, 11330, 15450, 16995, 28325, 33990, 56650, 84975, 169950]

約数ペア:

[(1, 169950), (2, 84975), (3, 56650), (5, 33990), (6, 28325), (10, 16995), (11, 15450), (15, 11330), (22, 7725), (25, 6798), (30, 5665), (33, 5150), (50, 3399), (55, 3090), (66, 2575), (75, 2266), (103, 1650), (110, 1545), (150, 1133), (165, 1030), (206, 825), (275, 618), (309, 550), (330, 515)]