19801950

素因数分解:

$2^1\times 3^1\times 5^2\times 7^1\times {\mathrm{18859}}^1$

素因数の和:18881

約数の個数: 48

約数和(自身を含む): 56127360

約数和(自身を除く): 36325410

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 75, 105, 150, 175, 210, 350, 525, 1050, 18859, 37718, 56577, 94295, 113154, 132013, 188590, 264026, 282885, 396039, 471475, 565770, 660065, 792078, 942950, 1320130, 1414425, 1980195, 2828850, 3300325, 3960390, 6600650, 9900975, 19801950]

約数ペア:

[(1, 19801950), (2, 9900975), (3, 6600650), (5, 3960390), (6, 3300325), (7, 2828850), (10, 1980195), (14, 1414425), (15, 1320130), (21, 942950), (25, 792078), (30, 660065), (35, 565770), (42, 471475), (50, 396039), (70, 282885), (75, 264026), (105, 188590), (150, 132013), (175, 113154), (210, 94295), (350, 56577), (525, 37718), (1050, 18859)]