20209761

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{383}}^1$

素因数の和:454

約数の個数: 48

約数和(自身を含む): 35223552

約数和(自身を除く): 15013791

約数列:

[1, 3, 9, 11, 13, 33, 39, 41, 99, 117, 123, 143, 369, 383, 429, 451, 533, 1149, 1287, 1353, 1599, 3447, 4059, 4213, 4797, 4979, 5863, 12639, 14937, 15703, 17589, 37917, 44811, 47109, 52767, 54769, 141327, 164307, 172733, 204139, 492921, 518199, 612417, 1554597, 1837251, 2245529, 6736587, 20209761]

約数ペア:

[(1, 20209761), (3, 6736587), (9, 2245529), (11, 1837251), (13, 1554597), (33, 612417), (39, 518199), (41, 492921), (99, 204139), (117, 172733), (123, 164307), (143, 141327), (369, 54769), (383, 52767), (429, 47109), (451, 44811), (533, 37917), (1149, 17589), (1287, 15703), (1353, 14937), (1599, 12639), (3447, 5863), (4059, 4979), (4213, 4797)]