20231955

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{499}}^1$

素因数の和:580

約数の個数: 48

約数和(自身を含む): 37908000

約数和(自身を除く): 17676045

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 53, 85, 153, 159, 255, 265, 477, 499, 765, 795, 901, 1497, 2385, 2495, 2703, 4491, 4505, 7485, 8109, 8483, 13515, 22455, 25449, 26447, 40545, 42415, 76347, 79341, 127245, 132235, 238023, 381735, 396705, 449599, 1190115, 1348797, 2247995, 4046391, 6743985, 20231955]

約数ペア:

[(1, 20231955), (3, 6743985), (5, 4046391), (9, 2247995), (15, 1348797), (17, 1190115), (45, 449599), (51, 396705), (53, 381735), (85, 238023), (153, 132235), (159, 127245), (255, 79341), (265, 76347), (477, 42415), (499, 40545), (765, 26447), (795, 25449), (901, 22455), (1497, 13515), (2385, 8483), (2495, 8109), (2703, 7485), (4491, 4505)]