21808761

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{593}}^1$

素因数の和:673

約数の個数: 32

約数和(自身を含む): 33530112

約数和(自身を除く): 11721351

約数列:

[1, 3, 13, 23, 39, 41, 69, 123, 299, 533, 593, 897, 943, 1599, 1779, 2829, 7709, 12259, 13639, 23127, 24313, 36777, 40917, 72939, 177307, 316069, 531921, 559199, 948207, 1677597, 7269587, 21808761]

約数ペア:

[(1, 21808761), (3, 7269587), (13, 1677597), (23, 948207), (39, 559199), (41, 531921), (69, 316069), (123, 177307), (299, 72939), (533, 40917), (593, 36777), (897, 24313), (943, 23127), (1599, 13639), (1779, 12259), (2829, 7709)]