20656860

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{359}}^1$

素因数の和:515

約数の個数: 96

約数和(自身を含む): 66769920

約数和(自身を除く): 46113060

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 137, 140, 210, 274, 359, 411, 420, 548, 685, 718, 822, 959, 1077, 1370, 1436, 1644, 1795, 1918, 2055, 2154, 2513, 2740, 2877, 3590, 3836, 4110, 4308, 4795, 5026, 5385, 5754, 7180, 7539, 8220, 9590, 10052, 10770, 11508, 12565, 14385, 15078, 19180, 21540, 25130, 28770, 30156, 37695, 49183, 50260, 57540, 75390, 98366, 147549, 150780, 196732, 245915, 295098, 344281, 491830, 590196, 688562, 737745, 983660, 1032843, 1377124, 1475490, 1721405, 2065686, 2950980, 3442810, 4131372, 5164215, 6885620, 10328430, 20656860]

約数ペア:

[(1, 20656860), (2, 10328430), (3, 6885620), (4, 5164215), (5, 4131372), (6, 3442810), (7, 2950980), (10, 2065686), (12, 1721405), (14, 1475490), (15, 1377124), (20, 1032843), (21, 983660), (28, 737745), (30, 688562), (35, 590196), (42, 491830), (60, 344281), (70, 295098), (84, 245915), (105, 196732), (137, 150780), (140, 147549), (210, 98366), (274, 75390), (359, 57540), (411, 50260), (420, 49183), (548, 37695), (685, 30156), (718, 28770), (822, 25130), (959, 21540), (1077, 19180), (1370, 15078), (1436, 14385), (1644, 12565), (1795, 11508), (1918, 10770), (2055, 10052), (2154, 9590), (2513, 8220), (2740, 7539), (2877, 7180), (3590, 5754), (3836, 5385), (4110, 5026), (4308, 4795)]