20771940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{137}}^1$

素因数の和:194

約数の個数: 144

約数和(自身を含む): 70664832

約数和(自身を除く): 49892892

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 137, 140, 190, 210, 228, 266, 274, 285, 361, 380, 399, 411, 420, 532, 548, 570, 665, 685, 722, 798, 822, 959, 1083, 1140, 1330, 1370, 1444, 1596, 1644, 1805, 1918, 1995, 2055, 2166, 2527, 2603, 2660, 2740, 2877, 3610, 3836, 3990, 4110, 4332, 4795, 5054, 5206, 5415, 5754, 7220, 7581, 7809, 7980, 8220, 9590, 10108, 10412, 10830, 11508, 12635, 13015, 14385, 15162, 15618, 18221, 19180, 21660, 25270, 26030, 28770, 30324, 31236, 36442, 37905, 39045, 49457, 50540, 52060, 54663, 57540, 72884, 75810, 78090, 91105, 98914, 109326, 148371, 151620, 156180, 182210, 197828, 218652, 247285, 273315, 296742, 346199, 364420, 494570, 546630, 593484, 692398, 741855, 989140, 1038597, 1093260, 1384796, 1483710, 1730995, 2077194, 2967420, 3461990, 4154388, 5192985, 6923980, 10385970, 20771940]

約数ペア:

[(1, 20771940), (2, 10385970), (3, 6923980), (4, 5192985), (5, 4154388), (6, 3461990), (7, 2967420), (10, 2077194), (12, 1730995), (14, 1483710), (15, 1384796), (19, 1093260), (20, 1038597), (21, 989140), (28, 741855), (30, 692398), (35, 593484), (38, 546630), (42, 494570), (57, 364420), (60, 346199), (70, 296742), (76, 273315), (84, 247285), (95, 218652), (105, 197828), (114, 182210), (133, 156180), (137, 151620), (140, 148371), (190, 109326), (210, 98914), (228, 91105), (266, 78090), (274, 75810), (285, 72884), (361, 57540), (380, 54663), (399, 52060), (411, 50540), (420, 49457), (532, 39045), (548, 37905), (570, 36442), (665, 31236), (685, 30324), (722, 28770), (798, 26030), (822, 25270), (959, 21660), (1083, 19180), (1140, 18221), (1330, 15618), (1370, 15162), (1444, 14385), (1596, 13015), (1644, 12635), (1805, 11508), (1918, 10830), (1995, 10412), (2055, 10108), (2166, 9590), (2527, 8220), (2603, 7980), (2660, 7809), (2740, 7581), (2877, 7220), (3610, 5754), (3836, 5415), (3990, 5206), (4110, 5054), (4332, 4795)]