642168

素因数分解:

$2^3\times 3^4\times {\mathrm{991}}^1$

素因数の和:1009

約数の個数: 40

約数和(自身を含む): 1800480

約数和(自身を除く): 1158312

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648, 991, 1982, 2973, 3964, 5946, 7928, 8919, 11892, 17838, 23784, 26757, 35676, 53514, 71352, 80271, 107028, 160542, 214056, 321084, 642168]

約数ペア:

[(1, 642168), (2, 321084), (3, 214056), (4, 160542), (6, 107028), (8, 80271), (9, 71352), (12, 53514), (18, 35676), (24, 26757), (27, 23784), (36, 17838), (54, 11892), (72, 8919), (81, 7928), (108, 5946), (162, 3964), (216, 2973), (324, 1982), (648, 991)]