21031500

素因数分解:

$2^2\times 3^1\times 5^3\times 7^1\times {\mathrm{2003}}^1$

素因数の和:2032

約数の個数: 96

約数和(自身を含む): 70027776

約数和(自身を除く): 48996276

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, 420, 500, 525, 700, 750, 875, 1050, 1500, 1750, 2003, 2100, 2625, 3500, 4006, 5250, 6009, 8012, 10015, 10500, 12018, 14021, 20030, 24036, 28042, 30045, 40060, 42063, 50075, 56084, 60090, 70105, 84126, 100150, 120180, 140210, 150225, 168252, 200300, 210315, 250375, 280420, 300450, 350525, 420630, 500750, 600900, 701050, 751125, 841260, 1001500, 1051575, 1402100, 1502250, 1752625, 2103150, 3004500, 3505250, 4206300, 5257875, 7010500, 10515750, 21031500]

約数ペア:

[(1, 21031500), (2, 10515750), (3, 7010500), (4, 5257875), (5, 4206300), (6, 3505250), (7, 3004500), (10, 2103150), (12, 1752625), (14, 1502250), (15, 1402100), (20, 1051575), (21, 1001500), (25, 841260), (28, 751125), (30, 701050), (35, 600900), (42, 500750), (50, 420630), (60, 350525), (70, 300450), (75, 280420), (84, 250375), (100, 210315), (105, 200300), (125, 168252), (140, 150225), (150, 140210), (175, 120180), (210, 100150), (250, 84126), (300, 70105), (350, 60090), (375, 56084), (420, 50075), (500, 42063), (525, 40060), (700, 30045), (750, 28042), (875, 24036), (1050, 20030), (1500, 14021), (1750, 12018), (2003, 10500), (2100, 10015), (2625, 8012), (3500, 6009), (4006, 5250)]