18945000

素因数分解:

$2^3\times 3^2\times 5^4\times {\mathrm{421}}^1$

素因数の和:453

約数の個数: 120

約数和(自身を含む): 64268490

約数和(自身を除く): 45323490

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, 421, 450, 500, 600, 625, 750, 842, 900, 1000, 1125, 1250, 1263, 1500, 1684, 1800, 1875, 2105, 2250, 2500, 2526, 3000, 3368, 3750, 3789, 4210, 4500, 5000, 5052, 5625, 6315, 7500, 7578, 8420, 9000, 10104, 10525, 11250, 12630, 15000, 15156, 16840, 18945, 21050, 22500, 25260, 30312, 31575, 37890, 42100, 45000, 50520, 52625, 63150, 75780, 84200, 94725, 105250, 126300, 151560, 157875, 189450, 210500, 252600, 263125, 315750, 378900, 421000, 473625, 526250, 631500, 757800, 789375, 947250, 1052500, 1263000, 1578750, 1894500, 2105000, 2368125, 3157500, 3789000, 4736250, 6315000, 9472500, 18945000]

約数ペア:

[(1, 18945000), (2, 9472500), (3, 6315000), (4, 4736250), (5, 3789000), (6, 3157500), (8, 2368125), (9, 2105000), (10, 1894500), (12, 1578750), (15, 1263000), (18, 1052500), (20, 947250), (24, 789375), (25, 757800), (30, 631500), (36, 526250), (40, 473625), (45, 421000), (50, 378900), (60, 315750), (72, 263125), (75, 252600), (90, 210500), (100, 189450), (120, 157875), (125, 151560), (150, 126300), (180, 105250), (200, 94725), (225, 84200), (250, 75780), (300, 63150), (360, 52625), (375, 50520), (421, 45000), (450, 42100), (500, 37890), (600, 31575), (625, 30312), (750, 25260), (842, 22500), (900, 21050), (1000, 18945), (1125, 16840), (1250, 15156), (1263, 15000), (1500, 12630), (1684, 11250), (1800, 10525), (1875, 10104), (2105, 9000), (2250, 8420), (2500, 7578), (2526, 7500), (3000, 6315), (3368, 5625), (3750, 5052), (3789, 5000), (4210, 4500)]