20882985

素因数分解:

$3^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:433

約数の個数: 32

約数和(自身を含む): 34670592

約数和(自身を除く): 13787607

約数列:

[1, 3, 5, 15, 37, 111, 185, 191, 197, 555, 573, 591, 955, 985, 2865, 2955, 7067, 7289, 21201, 21867, 35335, 36445, 37627, 106005, 109335, 112881, 188135, 564405, 1392199, 4176597, 6960995, 20882985]

約数ペア:

[(1, 20882985), (3, 6960995), (5, 4176597), (15, 1392199), (37, 564405), (111, 188135), (185, 112881), (191, 109335), (197, 106005), (555, 37627), (573, 36445), (591, 35335), (955, 21867), (985, 21201), (2865, 7289), (2955, 7067)]