19770520

素因数分解:

$2^3\times 5^1\times 7^3\times {\mathrm{11}}^1\times {\mathrm{131}}^1$

素因数の和:174

約数の個数: 128

約数和(自身を含む): 57024000

約数和(自身を除く): 37253480

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 49, 55, 56, 70, 77, 88, 98, 110, 131, 140, 154, 196, 220, 245, 262, 280, 308, 343, 385, 392, 440, 490, 524, 539, 616, 655, 686, 770, 917, 980, 1048, 1078, 1310, 1372, 1441, 1540, 1715, 1834, 1960, 2156, 2620, 2695, 2744, 2882, 3080, 3430, 3668, 3773, 4312, 4585, 5240, 5390, 5764, 6419, 6860, 7205, 7336, 7546, 9170, 10087, 10780, 11528, 12838, 13720, 14410, 15092, 18340, 18865, 20174, 21560, 25676, 28820, 30184, 32095, 36680, 37730, 40348, 44933, 50435, 51352, 57640, 64190, 70609, 75460, 80696, 89866, 100870, 128380, 141218, 150920, 179732, 201740, 224665, 256760, 282436, 353045, 359464, 403480, 449330, 494263, 564872, 706090, 898660, 988526, 1412180, 1797320, 1977052, 2471315, 2824360, 3954104, 4942630, 9885260, 19770520]

約数ペア:

[(1, 19770520), (2, 9885260), (4, 4942630), (5, 3954104), (7, 2824360), (8, 2471315), (10, 1977052), (11, 1797320), (14, 1412180), (20, 988526), (22, 898660), (28, 706090), (35, 564872), (40, 494263), (44, 449330), (49, 403480), (55, 359464), (56, 353045), (70, 282436), (77, 256760), (88, 224665), (98, 201740), (110, 179732), (131, 150920), (140, 141218), (154, 128380), (196, 100870), (220, 89866), (245, 80696), (262, 75460), (280, 70609), (308, 64190), (343, 57640), (385, 51352), (392, 50435), (440, 44933), (490, 40348), (524, 37730), (539, 36680), (616, 32095), (655, 30184), (686, 28820), (770, 25676), (917, 21560), (980, 20174), (1048, 18865), (1078, 18340), (1310, 15092), (1372, 14410), (1441, 13720), (1540, 12838), (1715, 11528), (1834, 10780), (1960, 10087), (2156, 9170), (2620, 7546), (2695, 7336), (2744, 7205), (2882, 6860), (3080, 6419), (3430, 5764), (3668, 5390), (3773, 5240), (4312, 4585)]