20148639

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{421}}^1$

素因数の和:527

約数の個数: 32

約数和(自身を含む): 32085504

約数和(自身を除く): 11936865

約数列:

[1, 3, 7, 21, 43, 53, 129, 159, 301, 371, 421, 903, 1113, 1263, 2279, 2947, 6837, 8841, 15953, 18103, 22313, 47859, 54309, 66939, 126721, 156191, 380163, 468573, 959459, 2878377, 6716213, 20148639]

約数ペア:

[(1, 20148639), (3, 6716213), (7, 2878377), (21, 959459), (43, 468573), (53, 380163), (129, 156191), (159, 126721), (301, 66939), (371, 54309), (421, 47859), (903, 22313), (1113, 18103), (1263, 15953), (2279, 8841), (2947, 6837)]