20265840

素因数分解:

$2^4\times 3^2\times 5^1\times 7^1\times {\mathrm{4021}}^1$

素因数の和:4047

約数の個数: 120

約数和(自身を含む): 77801568

約数和(自身を除く): 57535728

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 28, 30, 35, 36, 40, 42, 45, 48, 56, 60, 63, 70, 72, 80, 84, 90, 105, 112, 120, 126, 140, 144, 168, 180, 210, 240, 252, 280, 315, 336, 360, 420, 504, 560, 630, 720, 840, 1008, 1260, 1680, 2520, 4021, 5040, 8042, 12063, 16084, 20105, 24126, 28147, 32168, 36189, 40210, 48252, 56294, 60315, 64336, 72378, 80420, 84441, 96504, 112588, 120630, 140735, 144756, 160840, 168882, 180945, 193008, 225176, 241260, 253323, 281470, 289512, 321680, 337764, 361890, 422205, 450352, 482520, 506646, 562940, 579024, 675528, 723780, 844410, 965040, 1013292, 1125880, 1266615, 1351056, 1447560, 1688820, 2026584, 2251760, 2533230, 2895120, 3377640, 4053168, 5066460, 6755280, 10132920, 20265840]

約数ペア:

[(1, 20265840), (2, 10132920), (3, 6755280), (4, 5066460), (5, 4053168), (6, 3377640), (7, 2895120), (8, 2533230), (9, 2251760), (10, 2026584), (12, 1688820), (14, 1447560), (15, 1351056), (16, 1266615), (18, 1125880), (20, 1013292), (21, 965040), (24, 844410), (28, 723780), (30, 675528), (35, 579024), (36, 562940), (40, 506646), (42, 482520), (45, 450352), (48, 422205), (56, 361890), (60, 337764), (63, 321680), (70, 289512), (72, 281470), (80, 253323), (84, 241260), (90, 225176), (105, 193008), (112, 180945), (120, 168882), (126, 160840), (140, 144756), (144, 140735), (168, 120630), (180, 112588), (210, 96504), (240, 84441), (252, 80420), (280, 72378), (315, 64336), (336, 60315), (360, 56294), (420, 48252), (504, 40210), (560, 36189), (630, 32168), (720, 28147), (840, 24126), (1008, 20105), (1260, 16084), (1680, 12063), (2520, 8042), (4021, 5040)]