20717340

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{461}}^1$

素因数の和:587

約数の個数: 96

約数和(自身を含む): 67060224

約数和(自身を除く): 46342884

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 107, 140, 210, 214, 321, 420, 428, 461, 535, 642, 749, 922, 1070, 1284, 1383, 1498, 1605, 1844, 2140, 2247, 2305, 2766, 2996, 3210, 3227, 3745, 4494, 4610, 5532, 6420, 6454, 6915, 7490, 8988, 9220, 9681, 11235, 12908, 13830, 14980, 16135, 19362, 22470, 27660, 32270, 38724, 44940, 48405, 49327, 64540, 96810, 98654, 147981, 193620, 197308, 246635, 295962, 345289, 493270, 591924, 690578, 739905, 986540, 1035867, 1381156, 1479810, 1726445, 2071734, 2959620, 3452890, 4143468, 5179335, 6905780, 10358670, 20717340]

約数ペア:

[(1, 20717340), (2, 10358670), (3, 6905780), (4, 5179335), (5, 4143468), (6, 3452890), (7, 2959620), (10, 2071734), (12, 1726445), (14, 1479810), (15, 1381156), (20, 1035867), (21, 986540), (28, 739905), (30, 690578), (35, 591924), (42, 493270), (60, 345289), (70, 295962), (84, 246635), (105, 197308), (107, 193620), (140, 147981), (210, 98654), (214, 96810), (321, 64540), (420, 49327), (428, 48405), (461, 44940), (535, 38724), (642, 32270), (749, 27660), (922, 22470), (1070, 19362), (1284, 16135), (1383, 14980), (1498, 13830), (1605, 12908), (1844, 11235), (2140, 9681), (2247, 9220), (2305, 8988), (2766, 7490), (2996, 6915), (3210, 6454), (3227, 6420), (3745, 5532), (4494, 4610)]