21000663489

素因数分解:

$3^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{269}}^1\times {\mathrm{3581}}^1$

素因数の和:3922

約数の個数: 48

約数和(自身を含む): 31149645120

約数和(自身を除く): 10148981631

約数列:

[1, 3, 13, 39, 43, 129, 169, 269, 507, 559, 807, 1677, 3497, 3581, 7267, 10491, 10743, 11567, 21801, 34701, 45461, 46553, 136383, 139659, 150371, 153983, 451113, 461949, 605189, 963289, 1815567, 1954823, 2001779, 2889867, 5864469, 6005337, 12522757, 26023127, 37568271, 41421427, 78069381, 124264281, 162795841, 488387523, 538478551, 1615435653, 7000221163, 21000663489]

約数ペア:

[(1, 21000663489), (3, 7000221163), (13, 1615435653), (39, 538478551), (43, 488387523), (129, 162795841), (169, 124264281), (269, 78069381), (507, 41421427), (559, 37568271), (807, 26023127), (1677, 12522757), (3497, 6005337), (3581, 5864469), (7267, 2889867), (10491, 2001779), (10743, 1954823), (11567, 1815567), (21801, 963289), (34701, 605189), (45461, 461949), (46553, 451113), (136383, 153983), (139659, 150371)]