20179395

素因数分解:

$3^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{67}}^1\times {\mathrm{97}}^1$

素因数の和:201

約数の個数: 64

約数和(自身を含む): 38384640

約数和(自身を除く): 18205245

約数列:

[1, 3, 5, 9, 15, 23, 27, 45, 67, 69, 97, 115, 135, 201, 207, 291, 335, 345, 485, 603, 621, 873, 1005, 1035, 1455, 1541, 1809, 2231, 2619, 3015, 3105, 4365, 4623, 6499, 6693, 7705, 9045, 11155, 13095, 13869, 19497, 20079, 23115, 32495, 33465, 41607, 58491, 60237, 69345, 97485, 100395, 149477, 175473, 208035, 292455, 301185, 448431, 747385, 877365, 1345293, 2242155, 4035879, 6726465, 20179395]

約数ペア:

[(1, 20179395), (3, 6726465), (5, 4035879), (9, 2242155), (15, 1345293), (23, 877365), (27, 747385), (45, 448431), (67, 301185), (69, 292455), (97, 208035), (115, 175473), (135, 149477), (201, 100395), (207, 97485), (291, 69345), (335, 60237), (345, 58491), (485, 41607), (603, 33465), (621, 32495), (873, 23115), (1005, 20079), (1035, 19497), (1455, 13869), (1541, 13095), (1809, 11155), (2231, 9045), (2619, 7705), (3015, 6693), (3105, 6499), (4365, 4623)]