20709918

素因数分解:

$2^1\times 3^5\times {\mathrm{43}}^1\times {\mathrm{991}}^1$

素因数の和:1051

約数の個数: 48

約数和(自身を含む): 47663616

約数和(自身を除く): 26953698

約数列:

[1, 2, 3, 6, 9, 18, 27, 43, 54, 81, 86, 129, 162, 243, 258, 387, 486, 774, 991, 1161, 1982, 2322, 2973, 3483, 5946, 6966, 8919, 10449, 17838, 20898, 26757, 42613, 53514, 80271, 85226, 127839, 160542, 240813, 255678, 383517, 481626, 767034, 1150551, 2301102, 3451653, 6903306, 10354959, 20709918]

約数ペア:

[(1, 20709918), (2, 10354959), (3, 6903306), (6, 3451653), (9, 2301102), (18, 1150551), (27, 767034), (43, 481626), (54, 383517), (81, 255678), (86, 240813), (129, 160542), (162, 127839), (243, 85226), (258, 80271), (387, 53514), (486, 42613), (774, 26757), (991, 20898), (1161, 17838), (1982, 10449), (2322, 8919), (2973, 6966), (3483, 5946)]