20479545

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{421}}^1$

素因数の和:502

約数の個数: 48

約数和(自身を含む): 37919232

約数和(自身を除く): 17439687

約数列:

[1, 3, 5, 9, 15, 23, 45, 47, 69, 115, 141, 207, 235, 345, 421, 423, 705, 1035, 1081, 1263, 2105, 2115, 3243, 3789, 5405, 6315, 9683, 9729, 16215, 18945, 19787, 29049, 48415, 48645, 59361, 87147, 98935, 145245, 178083, 296805, 435735, 455101, 890415, 1365303, 2275505, 4095909, 6826515, 20479545]

約数ペア:

[(1, 20479545), (3, 6826515), (5, 4095909), (9, 2275505), (15, 1365303), (23, 890415), (45, 455101), (47, 435735), (69, 296805), (115, 178083), (141, 145245), (207, 98935), (235, 87147), (345, 59361), (421, 48645), (423, 48415), (705, 29049), (1035, 19787), (1081, 18945), (1263, 16215), (2105, 9729), (2115, 9683), (3243, 6315), (3789, 5405)]