20117815921

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{197}}^1\times {\mathrm{311}}^1\times {\mathrm{769}}^1$

素因数の和:1345

約数の個数: 32

約数和(自身を含む): 23593489920

約数和(自身を除く): 3475673999

約数列:

[1, 7, 61, 197, 311, 427, 769, 1379, 2177, 5383, 12017, 18971, 46909, 61267, 84119, 132797, 151493, 239159, 328363, 428869, 1060451, 1674113, 3737287, 9241073, 14588699, 26161009, 47114323, 64687511, 102120893, 329800261, 2873973703, 20117815921]

約数ペア:

[(1, 20117815921), (7, 2873973703), (61, 329800261), (197, 102120893), (311, 64687511), (427, 47114323), (769, 26161009), (1379, 14588699), (2177, 9241073), (5383, 3737287), (12017, 1674113), (18971, 1060451), (46909, 428869), (61267, 328363), (84119, 239159), (132797, 151493)]