21015000

素因数分解:

$2^3\times 3^2\times 5^4\times {\mathrm{467}}^1$

素因数の和:499

約数の個数: 120

約数和(自身を含む): 71274060

約数和(自身を除く): 50259060

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 25, 30, 36, 40, 45, 50, 60, 72, 75, 90, 100, 120, 125, 150, 180, 200, 225, 250, 300, 360, 375, 450, 467, 500, 600, 625, 750, 900, 934, 1000, 1125, 1250, 1401, 1500, 1800, 1868, 1875, 2250, 2335, 2500, 2802, 3000, 3736, 3750, 4203, 4500, 4670, 5000, 5604, 5625, 7005, 7500, 8406, 9000, 9340, 11208, 11250, 11675, 14010, 15000, 16812, 18680, 21015, 22500, 23350, 28020, 33624, 35025, 42030, 45000, 46700, 56040, 58375, 70050, 84060, 93400, 105075, 116750, 140100, 168120, 175125, 210150, 233500, 280200, 291875, 350250, 420300, 467000, 525375, 583750, 700500, 840600, 875625, 1050750, 1167500, 1401000, 1751250, 2101500, 2335000, 2626875, 3502500, 4203000, 5253750, 7005000, 10507500, 21015000]

約数ペア:

[(1, 21015000), (2, 10507500), (3, 7005000), (4, 5253750), (5, 4203000), (6, 3502500), (8, 2626875), (9, 2335000), (10, 2101500), (12, 1751250), (15, 1401000), (18, 1167500), (20, 1050750), (24, 875625), (25, 840600), (30, 700500), (36, 583750), (40, 525375), (45, 467000), (50, 420300), (60, 350250), (72, 291875), (75, 280200), (90, 233500), (100, 210150), (120, 175125), (125, 168120), (150, 140100), (180, 116750), (200, 105075), (225, 93400), (250, 84060), (300, 70050), (360, 58375), (375, 56040), (450, 46700), (467, 45000), (500, 42030), (600, 35025), (625, 33624), (750, 28020), (900, 23350), (934, 22500), (1000, 21015), (1125, 18680), (1250, 16812), (1401, 15000), (1500, 14010), (1800, 11675), (1868, 11250), (1875, 11208), (2250, 9340), (2335, 9000), (2500, 8406), (2802, 7500), (3000, 7005), (3736, 5625), (3750, 5604), (4203, 5000), (4500, 4670)]