18681845

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2161}}^1$

素因数の和:2205

約数の個数: 32

約数和(自身を含む): 29057280

約数和(自身を除く): 10375435

約数列:

[1, 5, 7, 13, 19, 35, 65, 91, 95, 133, 247, 455, 665, 1235, 1729, 2161, 8645, 10805, 15127, 28093, 41059, 75635, 140465, 196651, 205295, 287413, 533767, 983255, 1437065, 2668835, 3736369, 18681845]

約数ペア:

[(1, 18681845), (5, 3736369), (7, 2668835), (13, 1437065), (19, 983255), (35, 533767), (65, 287413), (91, 205295), (95, 196651), (133, 140465), (247, 75635), (455, 41059), (665, 28093), (1235, 15127), (1729, 10805), (2161, 8645)]