19989472321

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{445567}}^1$

素因数の和:445633

約数の個数: 32

約数和(自身を含む): 26947952640

約数和(自身を除く): 6958480319

約数列:

[1, 7, 13, 17, 29, 91, 119, 203, 221, 377, 493, 1547, 2639, 3451, 6409, 44863, 445567, 3118969, 5792371, 7574639, 12921443, 40546597, 53022473, 90450101, 98470307, 167978759, 219664531, 689292149, 1175851313, 1537651717, 2855638903, 19989472321]

約数ペア:

[(1, 19989472321), (7, 2855638903), (13, 1537651717), (17, 1175851313), (29, 689292149), (91, 219664531), (119, 167978759), (203, 98470307), (221, 90450101), (377, 53022473), (493, 40546597), (1547, 12921443), (2639, 7574639), (3451, 5792371), (6409, 3118969), (44863, 445567)]