19739988

素因数分解:

$2^2\times 3^2\times {\mathrm{71}}^1\times {\mathrm{7723}}^1$

素因数の和:7804

約数の個数: 36

約数和(自身を含む): 50607648

約数和(自身を除く): 30867660

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 71, 142, 213, 284, 426, 639, 852, 1278, 2556, 7723, 15446, 23169, 30892, 46338, 69507, 92676, 139014, 278028, 548333, 1096666, 1644999, 2193332, 3289998, 4934997, 6579996, 9869994, 19739988]

約数ペア:

[(1, 19739988), (2, 9869994), (3, 6579996), (4, 4934997), (6, 3289998), (9, 2193332), (12, 1644999), (18, 1096666), (36, 548333), (71, 278028), (142, 139014), (213, 92676), (284, 69507), (426, 46338), (639, 30892), (852, 23169), (1278, 15446), (2556, 7723)]