19897500

素因数分解:

$2^2\times 3^1\times 5^4\times 7^1\times {\mathrm{379}}^1$

素因数の和:413

約数の個数: 120

約数和(自身を含む): 66478720

約数和(自身を除く): 46581220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 25, 28, 30, 35, 42, 50, 60, 70, 75, 84, 100, 105, 125, 140, 150, 175, 210, 250, 300, 350, 375, 379, 420, 500, 525, 625, 700, 750, 758, 875, 1050, 1137, 1250, 1500, 1516, 1750, 1875, 1895, 2100, 2274, 2500, 2625, 2653, 3500, 3750, 3790, 4375, 4548, 5250, 5306, 5685, 7500, 7580, 7959, 8750, 9475, 10500, 10612, 11370, 13125, 13265, 15918, 17500, 18950, 22740, 26250, 26530, 28425, 31836, 37900, 39795, 47375, 52500, 53060, 56850, 66325, 79590, 94750, 113700, 132650, 142125, 159180, 189500, 198975, 236875, 265300, 284250, 331625, 397950, 473750, 568500, 663250, 710625, 795900, 947500, 994875, 1326500, 1421250, 1658125, 1989750, 2842500, 3316250, 3979500, 4974375, 6632500, 9948750, 19897500]

約数ペア:

[(1, 19897500), (2, 9948750), (3, 6632500), (4, 4974375), (5, 3979500), (6, 3316250), (7, 2842500), (10, 1989750), (12, 1658125), (14, 1421250), (15, 1326500), (20, 994875), (21, 947500), (25, 795900), (28, 710625), (30, 663250), (35, 568500), (42, 473750), (50, 397950), (60, 331625), (70, 284250), (75, 265300), (84, 236875), (100, 198975), (105, 189500), (125, 159180), (140, 142125), (150, 132650), (175, 113700), (210, 94750), (250, 79590), (300, 66325), (350, 56850), (375, 53060), (379, 52500), (420, 47375), (500, 39795), (525, 37900), (625, 31836), (700, 28425), (750, 26530), (758, 26250), (875, 22740), (1050, 18950), (1137, 17500), (1250, 15918), (1500, 13265), (1516, 13125), (1750, 11370), (1875, 10612), (1895, 10500), (2100, 9475), (2274, 8750), (2500, 7959), (2625, 7580), (2653, 7500), (3500, 5685), (3750, 5306), (3790, 5250), (4375, 4548)]