19980252

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{7817}}^1$

素因数の和:7898

約数の個数: 36

約数和(自身を含む): 51223536

約数和(自身を除く): 31243284

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 7817, 15634, 23451, 31268, 46902, 70353, 93804, 140706, 281412, 555007, 1110014, 1665021, 2220028, 3330042, 4995063, 6660084, 9990126, 19980252]

約数ペア:

[(1, 19980252), (2, 9990126), (3, 6660084), (4, 4995063), (6, 3330042), (9, 2220028), (12, 1665021), (18, 1110014), (36, 555007), (71, 281412), (142, 140706), (213, 93804), (284, 70353), (426, 46902), (639, 31268), (852, 23451), (1278, 15634), (2556, 7817)]