20421640260

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16207651}}^1$

素因数の和:16207673

約数の個数: 72

約数和(自身を含む): 70795023936

約数和(自身を除く): 50373383676

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16207651, 32415302, 48622953, 64830604, 81038255, 97245906, 113453557, 145868859, 162076510, 194491812, 226907114, 243114765, 291737718, 324153020, 340360671, 453814228, 486229530, 567267785, 583475436, 680721342, 729344295, 972459060, 1021082013, 1134535570, 1361442684, 1458688590, 1701803355, 2042164026, 2269071140, 2917377180, 3403606710, 4084328052, 5105410065, 6807213420, 10210820130, 20421640260]

約数ペア:

[(1, 20421640260), (2, 10210820130), (3, 6807213420), (4, 5105410065), (5, 4084328052), (6, 3403606710), (7, 2917377180), (9, 2269071140), (10, 2042164026), (12, 1701803355), (14, 1458688590), (15, 1361442684), (18, 1134535570), (20, 1021082013), (21, 972459060), (28, 729344295), (30, 680721342), (35, 583475436), (36, 567267785), (42, 486229530), (45, 453814228), (60, 340360671), (63, 324153020), (70, 291737718), (84, 243114765), (90, 226907114), (105, 194491812), (126, 162076510), (140, 145868859), (180, 113453557), (210, 97245906), (252, 81038255), (315, 64830604), (420, 48622953), (630, 32415302), (1260, 16207651)]