19690147180

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{347}}^1\times {\mathrm{6971}}^1$

素因数の和:7375

約数の個数: 96

約数和(自身を含む): 46467654912

約数和(自身を除く): 26777507732

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 347, 370, 407, 694, 740, 814, 1388, 1628, 1735, 2035, 3470, 3817, 4070, 6940, 6971, 7634, 8140, 12839, 13942, 15268, 19085, 25678, 27884, 34855, 38170, 51356, 64195, 69710, 76340, 76681, 128390, 139420, 141229, 153362, 256780, 257927, 282458, 306724, 383405, 515854, 564916, 706145, 766810, 1031708, 1289635, 1412290, 1533620, 2418937, 2579270, 2824580, 2837197, 4837874, 5158540, 5674394, 9675748, 11348788, 12094685, 14185985, 24189370, 26608307, 28371970, 48378740, 53216614, 56743940, 89500669, 106433228, 133041535, 179001338, 266083070, 358002676, 447503345, 532166140, 895006690, 984507359, 1790013380, 1969014718, 3938029436, 4922536795, 9845073590, 19690147180]

約数ペア:

[(1, 19690147180), (2, 9845073590), (4, 4922536795), (5, 3938029436), (10, 1969014718), (11, 1790013380), (20, 984507359), (22, 895006690), (37, 532166140), (44, 447503345), (55, 358002676), (74, 266083070), (110, 179001338), (148, 133041535), (185, 106433228), (220, 89500669), (347, 56743940), (370, 53216614), (407, 48378740), (694, 28371970), (740, 26608307), (814, 24189370), (1388, 14185985), (1628, 12094685), (1735, 11348788), (2035, 9675748), (3470, 5674394), (3817, 5158540), (4070, 4837874), (6940, 2837197), (6971, 2824580), (7634, 2579270), (8140, 2418937), (12839, 1533620), (13942, 1412290), (15268, 1289635), (19085, 1031708), (25678, 766810), (27884, 706145), (34855, 564916), (38170, 515854), (51356, 383405), (64195, 306724), (69710, 282458), (76340, 257927), (76681, 256780), (128390, 153362), (139420, 141229)]