21000298467

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{307}}^1\times {\mathrm{16729}}^1$

素因数の和:17115

約数の個数: 32

約数和(自身を含む): 29680358400

約数和(自身を除く): 8680059933

約数列:

[1, 3, 29, 47, 87, 141, 307, 921, 1363, 4089, 8903, 14429, 16729, 26709, 43287, 50187, 418441, 485141, 786263, 1255323, 1455423, 2358789, 5135803, 15407409, 22801627, 68404881, 148938287, 241382741, 446814861, 724148223, 7000099489, 21000298467]

約数ペア:

[(1, 21000298467), (3, 7000099489), (29, 724148223), (47, 446814861), (87, 241382741), (141, 148938287), (307, 68404881), (921, 22801627), (1363, 15407409), (4089, 5135803), (8903, 2358789), (14429, 1455423), (16729, 1255323), (26709, 786263), (43287, 485141), (50187, 418441)]