21003000

素因数分解:

$2^3\times 3^1\times 5^3\times {\mathrm{7001}}^1$

素因数の和:7025

約数の個数: 64

約数和(自身を含む): 65538720

約数和(自身を除く): 44535720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 25, 30, 40, 50, 60, 75, 100, 120, 125, 150, 200, 250, 300, 375, 500, 600, 750, 1000, 1500, 3000, 7001, 14002, 21003, 28004, 35005, 42006, 56008, 70010, 84012, 105015, 140020, 168024, 175025, 210030, 280040, 350050, 420060, 525075, 700100, 840120, 875125, 1050150, 1400200, 1750250, 2100300, 2625375, 3500500, 4200600, 5250750, 7001000, 10501500, 21003000]

約数ペア:

[(1, 21003000), (2, 10501500), (3, 7001000), (4, 5250750), (5, 4200600), (6, 3500500), (8, 2625375), (10, 2100300), (12, 1750250), (15, 1400200), (20, 1050150), (24, 875125), (25, 840120), (30, 700100), (40, 525075), (50, 420060), (60, 350050), (75, 280040), (100, 210030), (120, 175025), (125, 168024), (150, 140020), (200, 105015), (250, 84012), (300, 70010), (375, 56008), (500, 42006), (600, 35005), (750, 28004), (1000, 21003), (1500, 14002), (3000, 7001)]