19943568

素因数分解:

$2^4\times 3^2\times {\mathrm{138497}}^1$

素因数の和:138511

約数の個数: 30

約数和(自身を含む): 55814694

約数和(自身を除く): 35871126

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 138497, 276994, 415491, 553988, 830982, 1107976, 1246473, 1661964, 2215952, 2492946, 3323928, 4985892, 6647856, 9971784, 19943568]

約数ペア:

[(1, 19943568), (2, 9971784), (3, 6647856), (4, 4985892), (6, 3323928), (8, 2492946), (9, 2215952), (12, 1661964), (16, 1246473), (18, 1107976), (24, 830982), (36, 553988), (48, 415491), (72, 276994), (144, 138497)]