21639660

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{769}}^1$

素因数の和:855

約数の個数: 96

約数和(自身を含む): 70371840

約数和(自身を除く): 48732180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 67, 70, 84, 105, 134, 140, 201, 210, 268, 335, 402, 420, 469, 670, 769, 804, 938, 1005, 1340, 1407, 1538, 1876, 2010, 2307, 2345, 2814, 3076, 3845, 4020, 4614, 4690, 5383, 5628, 7035, 7690, 9228, 9380, 10766, 11535, 14070, 15380, 16149, 21532, 23070, 26915, 28140, 32298, 46140, 51523, 53830, 64596, 80745, 103046, 107660, 154569, 161490, 206092, 257615, 309138, 322980, 360661, 515230, 618276, 721322, 772845, 1030460, 1081983, 1442644, 1545690, 1803305, 2163966, 3091380, 3606610, 4327932, 5409915, 7213220, 10819830, 21639660]

約数ペア:

[(1, 21639660), (2, 10819830), (3, 7213220), (4, 5409915), (5, 4327932), (6, 3606610), (7, 3091380), (10, 2163966), (12, 1803305), (14, 1545690), (15, 1442644), (20, 1081983), (21, 1030460), (28, 772845), (30, 721322), (35, 618276), (42, 515230), (60, 360661), (67, 322980), (70, 309138), (84, 257615), (105, 206092), (134, 161490), (140, 154569), (201, 107660), (210, 103046), (268, 80745), (335, 64596), (402, 53830), (420, 51523), (469, 46140), (670, 32298), (769, 28140), (804, 26915), (938, 23070), (1005, 21532), (1340, 16149), (1407, 15380), (1538, 14070), (1876, 11535), (2010, 10766), (2307, 9380), (2345, 9228), (2814, 7690), (3076, 7035), (3845, 5628), (4020, 5383), (4614, 4690)]